31230122331 has 16 divisors (see below), whose sum is σ = 45245680640. Its totient is φ = 19088019360.

The previous prime is 31230122311. The next prime is 31230122377. The reversal of 31230122331 is 13322103213.

It is not a de Polignac number, because 31230122331 - 2⁵ = 31230122299 is a prime.

It is a super-2 number, since 2×31230122331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31230122298 and 31230122307.

It is not an unprimeable number, because it can be changed into a prime (31230122311) 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, 8835280 + ... + 8838813.

It is an arithmetic number, because the mean of its divisors is an integer number (2827855040).

Almost surely, 2^31230122331 is an apocalyptic number.

31230122331 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31230122331 is a deficient number, since it is larger than the sum of its proper divisors (14015558309).

31230122331 is a wasteful number, since it uses less digits than its factorization.

31230122331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17674146.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31230122331 its reverse (13322103213), we get a palindrome (44552225544).

The spelling of 31230122331 in words is "thirty-one billion, two hundred thirty million, one hundred twenty-two thousand, three hundred thirty-one".