31124160 has 168 divisors, whose sum is σ = 109124496. Its totient is φ = 8140800.

The previous prime is 31124153. The next prime is 31124167. The reversal of 31124160 is 6142113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31124153) and next prime (31124167).

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

It is not an unprimeable number, because it can be changed into a prime (31124167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290827 + ... + 290933.

Almost surely, 2^31124160 is an apocalyptic number.

31124160 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 31124160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54562248).

31124160 is an abundant number, since it is smaller than the sum of its proper divisors (78000336).

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

31124160 is a wasteful number, since it uses less digits than its factorization.

31124160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31124160 is about 5578.9031179973. The cubic root of 31124160 is about 314.5568977781.

Adding to 31124160 its reverse (6142113), we get a palindrome (37266273).

The spelling of 31124160 in words is "thirty-one million, one hundred twenty-four thousand, one hundred sixty".