21032311131 has 24 divisors (see below), whose sum is σ = 32861097360. Its totient is φ = 12885926976.

The previous prime is 21032311109. The next prime is 21032311151. The reversal of 21032311131 is 13111323012.

21032311131 is a `hidden beast` number, since 210 + 323 + 1 + 1 + 131 = 666.

It is not a de Polignac number, because 21032311131 - 2⁶ = 21032311067 is a prime.

It is a super-2 number, since 2×21032311131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21032311151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369396 + ... + 422513.

It is an arithmetic number, because the mean of its divisors is an integer number (1369212390).

Almost surely, 2^21032311131 is an apocalyptic number.

21032311131 is a deficient number, since it is larger than the sum of its proper divisors (11828786229).

21032311131 is a wasteful number, since it uses less digits than its factorization.

21032311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792155 (or 792152 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21032311131 its reverse (13111323012), we get a palindrome (34143634143).

The spelling of 21032311131 in words is "twenty-one billion, thirty-two million, three hundred eleven thousand, one hundred thirty-one".