31345225351213 has 8 divisors (see below), whose sum is σ = 33216975562680. Its totient is φ = 29526200497920.

The previous prime is 31345225351211. The next prime is 31345225351277. The reversal of 31345225351213 is 31215352254313.

It can be written as a sum of positive squares in 4 ways, for example, as 566230665289 + 30778994685924 = 752483^2 + 5547882^2 .

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 31345225351213 - 2¹ = 31345225351211 is a prime.

It is a super-2 number, since 2×31345225351213² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31345225351211) 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, 13181338320 + ... + 13181340697.

It is an arithmetic number, because the mean of its divisors is an integer number (4152121945335).

Almost surely, 2^{31345225351213} is an apocalyptic number.

It is an amenable number.

31345225351213 is a deficient number, since it is larger than the sum of its proper divisors (1871750211467).

31345225351213 is a wasteful number, since it uses less digits than its factorization.

31345225351213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26362679087.

The product of its digits is 324000, while the sum is 40.

The spelling of 31345225351213 in words is "thirty-one trillion, three hundred forty-five billion, two hundred twenty-five million, three hundred fifty-one thousand, two hundred thirteen".