31426200 has 288 divisors, whose sum is σ = 121867200. Its totient is φ = 7188480.

The previous prime is 31426193. The next prime is 31426201. The reversal of 31426200 is 262413.

It is a happy number.

31426200 is a `hidden beast` number, since 3 + 1 + 42 + 620 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31426201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 397761 + ... + 397839.

It is an arithmetic number, because the mean of its divisors is an integer number (423150).

Almost surely, 2^31426200 is an apocalyptic number.

31426200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31426200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60933600).

31426200 is an abundant number, since it is smaller than the sum of its proper divisors (90441000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31426200 is a wasteful number, since it uses less digits than its factorization.

31426200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31426200 is about 5605.9075982396. The cubic root of 31426200 is about 315.5711482152.

Adding to 31426200 its reverse (262413), we get a palindrome (31688613).

It can be divided in two parts, 31426 and 200, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 31426200 in words is "thirty-one million, four hundred twenty-six thousand, two hundred".