31457223270661 has 4 divisors (see below), whose sum is σ = 31458612808000. Its totient is φ = 31455833733324.

The previous prime is 31457223270587. The next prime is 31457223270713. The reversal of 31457223270661 is 16607232275413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31457223270661 - 2¹⁵ = 31457223237893 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 (31457223277661) 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, 694734711 + ... + 694779988.

It is an arithmetic number, because the mean of its divisors is an integer number (7864653202000).

Almost surely, 2^{31457223270661} is an apocalyptic number.

It is an amenable number.

31457223270661 is a deficient number, since it is larger than the sum of its proper divisors (1389537339).

31457223270661 is a wasteful number, since it uses less digits than its factorization.

31457223270661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389537338.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 31457223270661 in words is "thirty-one trillion, four hundred fifty-seven billion, two hundred twenty-three million, two hundred seventy thousand, six hundred sixty-one".