117145131031 has 2 divisors, whose sum is σ = 117145131032. Its totient is φ = 117145131030.

The previous prime is 117145130957. The next prime is 117145131049. The reversal of 117145131031 is 130131541711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117145131031 - 2⁹ = 117145130519 is a prime.

It is a super-2 number, since 2×117145131031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117145131931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58572565515 + 58572565516.

It is an arithmetic number, because the mean of its divisors is an integer number (58572565516).

Almost surely, 2^117145131031 is an apocalyptic number.

117145131031 is a deficient number, since it is larger than the sum of its proper divisors (1).

117145131031 is an equidigital number, since it uses as much as digits as its factorization.

117145131031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

Adding to 117145131031 its reverse (130131541711), we get a palindrome (247276672742).

The spelling of 117145131031 in words is "one hundred seventeen billion, one hundred forty-five million, one hundred thirty-one thousand, thirty-one".