20215131054 has 16 divisors (see below), whose sum is σ = 42558170880. Its totient is φ = 6383725560.

The previous prime is 20215131049. The next prime is 20215131109. The reversal of 20215131054 is 45013151202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88662742 + ... + 88662969.

It is an arithmetic number, because the mean of its divisors is an integer number (2659885680).

Almost surely, 2^20215131054 is an apocalyptic number.

20215131054 is an abundant number, since it is smaller than the sum of its proper divisors (22343039826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20215131054 is a wasteful number, since it uses less digits than its factorization.

20215131054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177325735.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20215131054 its reverse (45013151202), we get a palindrome (65228282256).

The spelling of 20215131054 in words is "twenty billion, two hundred fifteen million, one hundred thirty-one thousand, fifty-four".