231110021330 has 16 divisors (see below), whose sum is σ = 417176509464. Its totient is φ = 92182126080.

The previous prime is 231110021279. The next prime is 231110021369. The reversal of 231110021330 is 33120011132.

It can be written as a sum of positive squares in 4 ways, for example, as 166195644241 + 64914377089 = 407671^2 + 254783^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231110021299 and 231110021308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32731601 + ... + 32738660.

Almost surely, 2^231110021330 is an apocalyptic number.

231110021330 is a deficient number, since it is larger than the sum of its proper divisors (186066488134).

231110021330 is a wasteful number, since it uses less digits than its factorization.

231110021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65470621.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 231110021330 its reverse (33120011132), we get a palindrome (264230032462).

The spelling of 231110021330 in words is "two hundred thirty-one billion, one hundred ten million, twenty-one thousand, three hundred thirty".