31232032131 has 8 divisors (see below), whose sum is σ = 41644759744. Its totient is φ = 20820329640.

The previous prime is 31232032127. The next prime is 31232032177. The reversal of 31232032131 is 13123023213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31232032131 - 2² = 31232032127 is a prime.

It is a super-2 number, since 2×31232032131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31232032098 and 31232032107.

It is not an unprimeable number, because it can be changed into a prime (31232032031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182125 + ... + 309246.

It is an arithmetic number, because the mean of its divisors is an integer number (5205594968).

Almost surely, 2^31232032131 is an apocalyptic number.

31232032131 is a deficient number, since it is larger than the sum of its proper divisors (10412727613).

31232032131 is a wasteful number, since it uses less digits than its factorization.

31232032131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512561.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31232032131 its reverse (13123023213), we get a palindrome (44355055344).

The spelling of 31232032131 in words is "thirty-one billion, two hundred thirty-two million, thirty-two thousand, one hundred thirty-one".