31955361023 has 4 divisors (see below), whose sum is σ = 33835088160. Its totient is φ = 30075633888.

The previous prime is 31955361017. The next prime is 31955361037. The reversal of 31955361023 is 32016355913.

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 31955361023 - 2¹⁰ = 31955359999 is a prime.

It is a super-2 number, since 2×31955361023² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31955361083) 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, 939863543 + ... + 939863576.

It is an arithmetic number, because the mean of its divisors is an integer number (8458772040).

Almost surely, 2^31955361023 is an apocalyptic number.

31955361023 is a deficient number, since it is larger than the sum of its proper divisors (1879727137).

31955361023 is a wasteful number, since it uses less digits than its factorization.

31955361023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879727136.

The product of its (nonzero) digits is 72900, while the sum is 38.

The spelling of 31955361023 in words is "thirty-one billion, nine hundred fifty-five million, three hundred sixty-one thousand, twenty-three".