31345232143131 has 24 divisors (see below), whose sum is σ = 45915147323136. Its totient is φ = 20602049279280.

The previous prime is 31345232143117. The next prime is 31345232143139. The reversal of 31345232143131 is 13134123254313.

31345232143131 is a `hidden beast` number, since 3 + 1 + 3 + 452 + 32 + 1 + 43 + 131 = 666.

It is not a de Polignac number, because 31345232143131 - 2⁷ = 31345232143003 is a prime.

It is a super-2 number, since 2×31345232143131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31345232143139) 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, 30059026 + ... + 31084328.

It is an arithmetic number, because the mean of its divisors is an integer number (1913131138464).

Almost surely, 2^{31345232143131} is an apocalyptic number.

31345232143131 is a deficient number, since it is larger than the sum of its proper divisors (14569915180005).

31345232143131 is a wasteful number, since it uses less digits than its factorization.

31345232143131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073223 (or 1073220 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 31345232143131 its reverse (13134123254313), we get a palindrome (44479355397444).

The spelling of 31345232143131 in words is "thirty-one trillion, three hundred forty-five billion, two hundred thirty-two million, one hundred forty-three thousand, one hundred thirty-one".