131233402511 has 2 divisors, whose sum is σ = 131233402512. Its totient is φ = 131233402510.

The previous prime is 131233402493. The next prime is 131233402541. The reversal of 131233402511 is 115204332131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131233402511 is a prime.

It is a super-2 number, since 2×131233402511² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131233402541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65616701255 + 65616701256.

It is an arithmetic number, because the mean of its divisors is an integer number (65616701256).

Almost surely, 2^131233402511 is an apocalyptic number.

131233402511 is a deficient number, since it is larger than the sum of its proper divisors (1).

131233402511 is an equidigital number, since it uses as much as digits as its factorization.

131233402511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 131233402511 its reverse (115204332131), we get a palindrome (246437734642).

The spelling of 131233402511 in words is "one hundred thirty-one billion, two hundred thirty-three million, four hundred two thousand, five hundred eleven".