31230123330152 has 32 divisors (see below), whose sum is σ = 60578583971400. Its totient is φ = 15075886070784.

The previous prime is 31230123330139. The next prime is 31230123330157. The reversal of 31230123330152 is 25103332103213.

It can be written as a sum of positive squares in 4 ways, for example, as 26249575952356 + 4980547377796 = 5123434^2 + 2231714^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (31230123330157) 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, 1611788 + ... + 8065860.

Almost surely, 2^{31230123330152} is an apocalyptic number.

It is an amenable number.

31230123330152 is a deficient number, since it is larger than the sum of its proper divisors (29348460641248).

31230123330152 is a wasteful number, since it uses less digits than its factorization.

31230123330152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6474965 (or 6474961 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 31230123330152 its reverse (25103332103213), we get a palindrome (56333455433365).

The spelling of 31230123330152 in words is "thirty-one trillion, two hundred thirty billion, one hundred twenty-three million, three hundred thirty thousand, one hundred fifty-two".