31451232255023 has 16 divisors (see below), whose sum is σ = 35998420101120. Its totient is φ = 26917591756416.

The previous prime is 31451232255011. The next prime is 31451232255041. The reversal of 31451232255023 is 32055223215413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31451232255023 is a prime.

It is a super-3 number, since 3×31451232255023³ (a number of 41 digits) contains 333 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 (31451232255043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43696886 + ... + 44410812.

It is an arithmetic number, because the mean of its divisors is an integer number (2249901256320).

Almost surely, 2^{31451232255023} is an apocalyptic number.

31451232255023 is a deficient number, since it is larger than the sum of its proper divisors (4547187846097).

31451232255023 is an equidigital number, since it uses as much as digits as its factorization.

31451232255023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723406.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 31451232255023 in words is "thirty-one trillion, four hundred fifty-one billion, two hundred thirty-two million, two hundred fifty-five thousand, twenty-three".