31312330021030 has 32 divisors (see below), whose sum is σ = 56986817793696. Its totient is φ = 12386324327424.

The previous prime is 31312330020953. The next prime is 31312330021067. The reversal of 31312330021030 is 3012003321313.

It is a super-2 number, since 2×31312330021030² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31312330020992 and 31312330021010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11081389 + ... + 13616968.

It is an arithmetic number, because the mean of its divisors is an integer number (1780838056053).

Almost surely, 2^{31312330021030} is an apocalyptic number.

31312330021030 is a deficient number, since it is larger than the sum of its proper divisors (25674487772666).

31312330021030 is a wasteful number, since it uses less digits than its factorization.

31312330021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24699768.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31312330021030 its reverse (3012003321313), we get a palindrome (34324333342343).

The spelling of 31312330021030 in words is "thirty-one trillion, three hundred twelve billion, three hundred thirty million, twenty-one thousand, thirty".