31312103302031 has 8 divisors (see below), whose sum is σ = 33661387649280. Its totient is φ = 29032946845848.

The previous prime is 31312103302019. The next prime is 31312103302063. The reversal of 31312103302031 is 13020330121313.

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

It is not a de Polignac number, because 31312103302031 - 2²² = 31312099107727 is a prime.

It is a super-2 number, since 2×31312103302031² (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 = 31312103301988 and 31312103302006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312103352031) 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, 17531971841 + ... + 17531973626.

It is an arithmetic number, because the mean of its divisors is an integer number (4207673456160).

Almost surely, 2^{31312103302031} is an apocalyptic number.

31312103302031 is a deficient number, since it is larger than the sum of its proper divisors (2349284347249).

31312103302031 is a wasteful number, since it uses less digits than its factorization.

31312103302031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35063945533.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31312103302031 its reverse (13020330121313), we get a palindrome (44332433423344).

The spelling of 31312103302031 in words is "thirty-one trillion, three hundred twelve billion, one hundred three million, three hundred two thousand, thirty-one".