20423625263031 has 16 divisors (see below), whose sum is σ = 27463595249664. Its totient is φ = 13499840801664.

The previous prime is 20423625263003. The next prime is 20423625263033. The reversal of 20423625263031 is 13036252632402.

It is not a de Polignac number, because 20423625263031 - 2⁹ = 20423625262519 is a prime.

It is a super-2 number, since 2×20423625263031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423625263033) 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, 16666941 + ... + 17850326.

It is an arithmetic number, because the mean of its divisors is an integer number (1716474703104).

Almost surely, 2^{20423625263031} is an apocalyptic number.

20423625263031 is a deficient number, since it is larger than the sum of its proper divisors (7039969986633).

20423625263031 is a wasteful number, since it uses less digits than its factorization.

20423625263031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34518950.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 20423625263031 its reverse (13036252632402), we get a palindrome (33459877895433).

The spelling of 20423625263031 in words is "twenty trillion, four hundred twenty-three billion, six hundred twenty-five million, two hundred sixty-three thousand, thirty-one".