31311012103331 has 8 divisors (see below), whose sum is σ = 31562618112000. Its totient is φ = 31060319365960.

The previous prime is 31311012103289. The next prime is 31311012103333. The reversal of 31311012103331 is 13330121011313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31311012103331 - 2³⁸ = 31036134196387 is a prime.

It is a super-2 number, since 2×31311012103331² (a number of 28 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 = 31311012103297 and 31311012103306.

It is not an unprimeable number, because it can be changed into a prime (31311012103333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228248981 + ... + 228386118.

It is an arithmetic number, because the mean of its divisors is an integer number (3945327264000).

Almost surely, 2^{31311012103331} is an apocalyptic number.

31311012103331 is a deficient number, since it is larger than the sum of its proper divisors (251606008669).

31311012103331 is a wasteful number, since it uses less digits than its factorization.

31311012103331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456635649.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31311012103331 its reverse (13330121011313), we get a palindrome (44641133114644).

The spelling of 31311012103331 in words is "thirty-one trillion, three hundred eleven billion, twelve million, one hundred three thousand, three hundred thirty-one".