158831641731731 has 2 divisors, whose sum is σ = 158831641731732. Its totient is φ = 158831641731730.

The previous prime is 158831641731643. The next prime is 158831641731761. The reversal of 158831641731731 is 137137146138851.

158831641731731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158831641731731 is a prime.

It is a super-2 number, since 2×158831641731731² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158831641731761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79415820865865 + 79415820865866.

It is an arithmetic number, because the mean of its divisors is an integer number (79415820865866).

Almost surely, 2^{158831641731731} is an apocalyptic number.

158831641731731 is a deficient number, since it is larger than the sum of its proper divisors (1).

158831641731731 is an equidigital number, since it uses as much as digits as its factorization.

158831641731731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 59.

The spelling of 158831641731731 in words is "one hundred fifty-eight trillion, eight hundred thirty-one billion, six hundred forty-one million, seven hundred thirty-one thousand, seven hundred thirty-one".