531415313131 has 2 divisors, whose sum is σ = 531415313132. Its totient is φ = 531415313130.

The previous prime is 531415313089. The next prime is 531415313179. The reversal of 531415313131 is 131313514135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531415313131 - 2⁷ = 531415313003 is a prime.

It is a super-2 number, since 2×531415313131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531415313093 and 531415313102.

It is not a weakly prime, because it can be changed into another prime (531415311131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265707656565 + 265707656566.

It is an arithmetic number, because the mean of its divisors is an integer number (265707656566).

Almost surely, 2^531415313131 is an apocalyptic number.

531415313131 is a deficient number, since it is larger than the sum of its proper divisors (1).

531415313131 is an equidigital number, since it uses as much as digits as its factorization.

531415313131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

Adding to 531415313131 its reverse (131313514135), we get a palindrome (662728827266).

The spelling of 531415313131 in words is "five hundred thirty-one billion, four hundred fifteen million, three hundred thirteen thousand, one hundred thirty-one".