31314234 has 48 divisors (see below), whose sum is σ = 74577888. Its totient is φ = 8735328.

The previous prime is 31314197. The next prime is 31314251. The reversal of 31314234 is 43241313.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31314234.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11404 + ... + 13880.

It is an arithmetic number, because the mean of its divisors is an integer number (1553706).

Almost surely, 2^31314234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31314234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37288944).

31314234 is an abundant number, since it is smaller than the sum of its proper divisors (43263654).

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

31314234 is a wasteful number, since it uses less digits than its factorization.

31314234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539 (or 2532 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 31314234 is about 5595.9122580684. The cubic root of 31314234 is about 315.1959274921.

Adding to 31314234 its reverse (43241313), we get a palindrome (74555547).

The spelling of 31314234 in words is "thirty-one million, three hundred fourteen thousand, two hundred thirty-four".