31666319053 has 4 divisors (see below), whose sum is σ = 32687813248. Its totient is φ = 30644824860.

The previous prime is 31666319051. The next prime is 31666319071. The reversal of 31666319053 is 35091366613.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35091366613 = 269 ⋅130451177.

It is a cyclic number.

It is not a de Polignac number, because 31666319053 - 2¹ = 31666319051 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 (31666319051) 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, 510747051 + ... + 510747112.

It is an arithmetic number, because the mean of its divisors is an integer number (8171953312).

Almost surely, 2^31666319053 is an apocalyptic number.

It is an amenable number.

31666319053 is a deficient number, since it is larger than the sum of its proper divisors (1021494195).

31666319053 is a wasteful number, since it uses less digits than its factorization.

31666319053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021494194.

The product of its (nonzero) digits is 262440, while the sum is 43.

The spelling of 31666319053 in words is "thirty-one billion, six hundred sixty-six million, three hundred nineteen thousand, fifty-three".