74157131 has 2 divisors, whose sum is σ = 74157132. Its totient is φ = 74157130.

The previous prime is 74157119. The next prime is 74157137. The reversal of 74157131 is 13175147.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74157131 is a prime.

It is a super-2 number, since 2×74157131² = 10998560156302322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74157094 and 74157103.

It is not a weakly prime, because it can be changed into another prime (74157137) 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, 37078565 + 37078566.

It is an arithmetic number, because the mean of its divisors is an integer number (37078566).

Almost surely, 2^74157131 is an apocalyptic number.

74157131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74157131 is an equidigital number, since it uses as much as digits as its factorization.

74157131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 29.

The square root of 74157131 is about 8611.4534777818. The cubic root of 74157131 is about 420.1305924211.

The spelling of 74157131 in words is "seventy-four million, one hundred fifty-seven thousand, one hundred thirty-one".