31023234 has 24 divisors (see below), whose sum is σ = 73328112. Its totient is φ = 9400920.

The previous prime is 31023233. The next prime is 31023247. The reversal of 31023234 is 43232013.

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 (31023233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78144 + ... + 78539.

It is an arithmetic number, because the mean of its divisors is an integer number (3055338).

Almost surely, 2^31023234 is an apocalyptic number.

31023234 is an abundant number, since it is smaller than the sum of its proper divisors (42304878).

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

31023234 is a wasteful number, since it uses less digits than its factorization.

31023234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156702 (or 156699 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 31023234 is about 5569.8504468253. The cubic root of 31023234 is about 314.2165261117.

Adding to 31023234 its reverse (43232013), we get a palindrome (74255247).

It can be divided in two parts, 3102 and 3234, that added together give a palindrome (6336).

The spelling of 31023234 in words is "thirty-one million, twenty-three thousand, two hundred thirty-four".