31322011211031 has 4 divisors (see below), whose sum is σ = 41762681614712. Its totient is φ = 20881340807352.

The previous prime is 31322011210967. The next prime is 31322011211033. The reversal of 31322011211031 is 13011211022313.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31322011211031 - 2⁶ = 31322011210967 is a prime.

It is a super-2 number, since 2×31322011211031² (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 = 31322011210989 and 31322011211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31322011211033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220335201836 + ... + 5220335201841.

It is an arithmetic number, because the mean of its divisors is an integer number (10440670403678).

Almost surely, 2^{31322011211031} is an apocalyptic number.

31322011211031 is a deficient number, since it is larger than the sum of its proper divisors (10440670403681).

31322011211031 is a wasteful number, since it uses less digits than its factorization.

31322011211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440670403680.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31322011211031 its reverse (13011211022313), we get a palindrome (44333222233344).

The spelling of 31322011211031 in words is "thirty-one trillion, three hundred twenty-two billion, eleven million, two hundred eleven thousand, thirty-one".