31000233230 has 32 divisors (see below), whose sum is σ = 56122365024. Its totient is φ = 12328638336.

The previous prime is 31000233223. The next prime is 31000233239. The reversal of 31000233230 is 3233200013.

It is a super-2 number, since 2×31000233230² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31000233199 and 31000233208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000233239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3389744 + ... + 3398876.

It is an arithmetic number, because the mean of its divisors is an integer number (1753823907).

Almost surely, 2^31000233230 is an apocalyptic number.

31000233230 is a deficient number, since it is larger than the sum of its proper divisors (25122131794).

31000233230 is a wasteful number, since it uses less digits than its factorization.

31000233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 31000233230 its reverse (3233200013), we get a palindrome (34233433243).

The spelling of 31000233230 in words is "thirty-one billion, two hundred thirty-three thousand, two hundred thirty".