157231037 has 2 divisors, whose sum is σ = 157231038. Its totient is φ = 157231036.

The previous prime is 157231033. The next prime is 157231097. The reversal of 157231037 is 730132751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96609241 + 60621796 = 9829^2 + 7786^2 .

It is a cyclic number.

It is not a de Polignac number, because 157231037 - 2² = 157231033 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157231033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78615518 + 78615519.

It is an arithmetic number, because the mean of its divisors is an integer number (78615519).

Almost surely, 2^157231037 is an apocalyptic number.

It is an amenable number.

157231037 is a deficient number, since it is larger than the sum of its proper divisors (1).

157231037 is an equidigital number, since it uses as much as digits as its factorization.

157231037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 157231037 is about 12539.1800768631. The cubic root of 157231037 is about 539.7335642642.

Adding to 157231037 its reverse (730132751), we get a palindrome (887363788).

The spelling of 157231037 in words is "one hundred fifty-seven million, two hundred thirty-one thousand, thirty-seven".