31234253 has 24 divisors (see below), whose sum is σ = 35837952. Its totient is φ = 27143424.

The previous prime is 31234241. The next prime is 31234279. The reversal of 31234253 is 35243213.

It is not a de Polignac number, because 31234253 - 2⁴ = 31234237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245876 + ... + 246002.

It is an arithmetic number, because the mean of its divisors is an integer number (1493248).

Almost surely, 2^31234253 is an apocalyptic number.

It is an amenable number.

31234253 is a deficient number, since it is larger than the sum of its proper divisors (4603699).

31234253 is a wasteful number, since it uses less digits than its factorization.

31234253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 204 counting only the distinct ones).

The product of its digits is 2160, while the sum is 23.

The square root of 31234253 is about 5588.7613117756. The cubic root of 31234253 is about 314.9273469799.

Adding to 31234253 its reverse (35243213), we get a palindrome (66477466).

The spelling of 31234253 in words is "thirty-one million, two hundred thirty-four thousand, two hundred fifty-three".