133091862731 has 2 divisors, whose sum is σ = 133091862732. Its totient is φ = 133091862730.

The previous prime is 133091862703. The next prime is 133091862793. The reversal of 133091862731 is 137268190331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133091862731 is a prime.

It is a super-2 number, since 2×133091862731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133091862331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66545931365 + 66545931366.

It is an arithmetic number, because the mean of its divisors is an integer number (66545931366).

Almost surely, 2^133091862731 is an apocalyptic number.

133091862731 is a deficient number, since it is larger than the sum of its proper divisors (1).

133091862731 is an equidigital number, since it uses as much as digits as its factorization.

133091862731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 133091862731 in words is "one hundred thirty-three billion, ninety-one million, eight hundred sixty-two thousand, seven hundred thirty-one".