22013151531 has 16 divisors (see below), whose sum is σ = 33616627968. Its totient is φ = 12551652000.

The previous prime is 22013151529. The next prime is 22013151577. The reversal of 22013151531 is 13515131022.

It is not a de Polignac number, because 22013151531 - 2¹ = 22013151529 is a prime.

It is a super-2 number, since 2×22013151531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22013151521) 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, 1127245 + ... + 1146606.

It is an arithmetic number, because the mean of its divisors is an integer number (2101039248).

Almost surely, 2^22013151531 is an apocalyptic number.

22013151531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22013151531 is a deficient number, since it is larger than the sum of its proper divisors (11603476437).

22013151531 is a wasteful number, since it uses less digits than its factorization.

22013151531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274322.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 22013151531 its reverse (13515131022), we get a palindrome (35528282553).

The spelling of 22013151531 in words is "twenty-two billion, thirteen million, one hundred fifty-one thousand, five hundred thirty-one".