157883731 has 2 divisors, whose sum is σ = 157883732. Its totient is φ = 157883730.

The previous prime is 157883729. The next prime is 157883771. The reversal of 157883731 is 137388751.

157883731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157883731 - 2¹ = 157883729 is a prime.

It is a super-2 number, since 2×157883731² = 49854545028960722, which contains 22 as substring.

Together with 157883729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (157883701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78941865 + 78941866.

It is an arithmetic number, because the mean of its divisors is an integer number (78941866).

Almost surely, 2^157883731 is an apocalyptic number.

157883731 is a deficient number, since it is larger than the sum of its proper divisors (1).

157883731 is an equidigital number, since it uses as much as digits as its factorization.

157883731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 157883731 is about 12565.1793063211. The cubic root of 157883731 is about 540.4793765555.

The spelling of 157883731 in words is "one hundred fifty-seven million, eight hundred eighty-three thousand, seven hundred thirty-one".