31300400131131 has 16 divisors (see below), whose sum is σ = 41792260450304. Its totient is φ = 20837755432224.

The previous prime is 31300400131127. The next prime is 31300400131157. The reversal of 31300400131131 is 13113100400313.

It is not a de Polignac number, because 31300400131131 - 2² = 31300400131127 is a prime.

It is a super-2 number, since 2×31300400131131² (a number of 28 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 = 31300400131098 and 31300400131107.

It is not an unprimeable number, because it can be changed into a prime (31300400131111) 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, 4308006 + ... + 9008868.

It is an arithmetic number, because the mean of its divisors is an integer number (2612016278144).

Almost surely, 2^{31300400131131} is an apocalyptic number.

31300400131131 is a deficient number, since it is larger than the sum of its proper divisors (10491860319173).

31300400131131 is a wasteful number, since it uses less digits than its factorization.

31300400131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703970.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31300400131131 its reverse (13113100400313), we get a palindrome (44413500531444).

The spelling of 31300400131131 in words is "thirty-one trillion, three hundred billion, four hundred million, one hundred thirty-one thousand, one hundred thirty-one".