31057342651 has 4 divisors (see below), whose sum is σ = 31065419632. Its totient is φ = 31049265672.

The previous prime is 31057342649. The next prime is 31057342691. The reversal of 31057342651 is 15624375013.

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

It is a cyclic number.

It is not a de Polignac number, because 31057342651 - 2¹ = 31057342649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31057342651.

It is not an unprimeable number, because it can be changed into a prime (31057342691) 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, 4032720 + ... + 4040413.

It is an arithmetic number, because the mean of its divisors is an integer number (7766354908).

Almost surely, 2^31057342651 is an apocalyptic number.

31057342651 is a deficient number, since it is larger than the sum of its proper divisors (8076981).

31057342651 is an equidigital number, since it uses as much as digits as its factorization.

31057342651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076980.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 31057342651 in words is "thirty-one billion, fifty-seven million, three hundred forty-two thousand, six hundred fifty-one".