31023230 has 16 divisors (see below), whose sum is σ = 63819360. Its totient is φ = 10636512.

The previous prime is 31023227. The next prime is 31023233. The reversal of 31023230 is 3232013.

It is an interprime number because it is at equal distance from previous prime (31023227) and next prime (31023233).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 221525 + ... + 221664.

It is an arithmetic number, because the mean of its divisors is an integer number (3988710).

Almost surely, 2^31023230 is an apocalyptic number.

31023230 is an abundant number, since it is smaller than the sum of its proper divisors (32796130).

31023230 is a wasteful number, since it uses less digits than its factorization.

31023230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443203.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 31023230 is about 5569.8500877492. The cubic root of 31023230 is about 314.2165126072.

Adding to 31023230 its reverse (3232013), we get a palindrome (34255243).

The spelling of 31023230 in words is "thirty-one million, twenty-three thousand, two hundred thirty".