158013731 has 2 divisors, whose sum is σ = 158013732. Its totient is φ = 158013730.

The previous prime is 158013673. The next prime is 158013763. The reversal of 158013731 is 137310851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158013731 - 2¹⁴ = 157997347 is a prime.

It is a super-2 number, since 2×158013731² = 49936678369080722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 158013694 and 158013703.

It is not a weakly prime, because it can be changed into another prime (158013131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79006865 + 79006866.

It is an arithmetic number, because the mean of its divisors is an integer number (79006866).

Almost surely, 2^158013731 is an apocalyptic number.

158013731 is a deficient number, since it is larger than the sum of its proper divisors (1).

158013731 is an equidigital number, since it uses as much as digits as its factorization.

158013731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 158013731 is about 12570.3512679638. The cubic root of 158013731 is about 540.6276777619.

The spelling of 158013731 in words is "one hundred fifty-eight million, thirteen thousand, seven hundred thirty-one".