31542253213 has 8 divisors (see below), whose sum is σ = 31730343680. Its totient is φ = 31354601040.

The previous prime is 31542253123. The next prime is 31542253219. The reversal of 31542253213 is 31235224513.

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 31542253213 - 2⁹ = 31542252701 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 (31542253219) 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, 35356 + ... + 253642.

It is an arithmetic number, because the mean of its divisors is an integer number (3966292960).

Almost surely, 2^31542253213 is an apocalyptic number.

It is an amenable number.

31542253213 is a deficient number, since it is larger than the sum of its proper divisors (188090467).

31542253213 is a wasteful number, since it uses less digits than its factorization.

31542253213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219147.

The product of its digits is 21600, while the sum is 31.

Adding to 31542253213 its reverse (31235224513), we get a palindrome (62777477726).

The spelling of 31542253213 in words is "thirty-one billion, five hundred forty-two million, two hundred fifty-three thousand, two hundred thirteen".