31033132131 has 32 divisors (see below), whose sum is σ = 42320005632. Its totient is φ = 20222242560.

The previous prime is 31033132111. The next prime is 31033132133. The reversal of 31033132131 is 13123133013.

It is not a de Polignac number, because 31033132131 - 2²² = 31028937827 is a prime.

It is a super-2 number, since 2×31033132131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31033132098 and 31033132107.

It is not an unprimeable number, because it can be changed into a prime (31033132133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25373986 + ... + 25375208.

It is an arithmetic number, because the mean of its divisors is an integer number (1322500176).

Almost surely, 2^31033132131 is an apocalyptic number.

31033132131 is a deficient number, since it is larger than the sum of its proper divisors (11286873501).

31033132131 is a wasteful number, since it uses less digits than its factorization.

31033132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31033132131 its reverse (13123133013), we get a palindrome (44156265144).

The spelling of 31033132131 in words is "thirty-one billion, thirty-three million, one hundred thirty-two thousand, one hundred thirty-one".