157231847 has 2 divisors, whose sum is σ = 157231848. Its totient is φ = 157231846.

The previous prime is 157231819. The next prime is 157231871. The reversal of 157231847 is 748132751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157231847 is a prime.

It is a super-2 number, since 2×157231847² = 49443707422062818, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157231847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157231247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78615923 + 78615924.

It is an arithmetic number, because the mean of its divisors is an integer number (78615924).

Almost surely, 2^157231847 is an apocalyptic number.

157231847 is a deficient number, since it is larger than the sum of its proper divisors (1).

157231847 is an equidigital number, since it uses as much as digits as its factorization.

157231847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 157231847 is about 12539.2123755840. The cubic root of 157231847 is about 539.7344911029.

The spelling of 157231847 in words is "one hundred fifty-seven million, two hundred thirty-one thousand, eight hundred forty-seven".