31325353013 has 4 divisors (see below), whose sum is σ = 31325752620. Its totient is φ = 31324953408.

The previous prime is 31325352979. The next prime is 31325353039. The reversal of 31325353013 is 31035352313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9490266724 + 21835086289 = 97418^2 + 147767^2 .

It is a cyclic number.

It is not a de Polignac number, because 31325353013 - 2¹⁴ = 31325336629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31325343013) 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, 39170 + ... + 253347.

It is an arithmetic number, because the mean of its divisors is an integer number (7831438155).

Almost surely, 2^31325353013 is an apocalyptic number.

It is an amenable number.

31325353013 is a deficient number, since it is larger than the sum of its proper divisors (399607).

31325353013 is a wasteful number, since it uses less digits than its factorization.

31325353013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399606.

The product of its (nonzero) digits is 12150, while the sum is 29.

The spelling of 31325353013 in words is "thirty-one billion, three hundred twenty-five million, three hundred fifty-three thousand, thirteen".