31322110431345 has 16 divisors (see below), whose sum is σ = 50130697886592. Its totient is φ = 16700018497920.

The previous prime is 31322110431341. The next prime is 31322110431419. The reversal of 31322110431345 is 54313401122313.

It is not a de Polignac number, because 31322110431345 - 2² = 31322110431341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31322110431341) 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, 319140892 + ... + 319239021.

It is an arithmetic number, because the mean of its divisors is an integer number (3133168617912).

Almost surely, 2^{31322110431345} is an apocalyptic number.

It is an amenable number.

31322110431345 is a deficient number, since it is larger than the sum of its proper divisors (18808587455247).

31322110431345 is a wasteful number, since it uses less digits than its factorization.

31322110431345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638383192.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 31322110431345 its reverse (54313401122313), we get a palindrome (85635511553658).

The spelling of 31322110431345 in words is "thirty-one trillion, three hundred twenty-two billion, one hundred ten million, four hundred thirty-one thousand, three hundred forty-five".