157010561231 has 4 divisors (see below), whose sum is σ = 165274275000. Its totient is φ = 148746847464.

The previous prime is 157010561219. The next prime is 157010561249. The reversal of 157010561231 is 132165010751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157010561231 - 2¹⁸ = 157010299087 is a prime.

It is a super-2 number, since 2×157010561231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157010561131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4131856856 + ... + 4131856893.

It is an arithmetic number, because the mean of its divisors is an integer number (41318568750).

Almost surely, 2^157010561231 is an apocalyptic number.

157010561231 is a deficient number, since it is larger than the sum of its proper divisors (8263713769).

157010561231 is an equidigital number, since it uses as much as digits as its factorization.

157010561231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8263713768.

The product of its (nonzero) digits is 6300, while the sum is 32.

Adding to 157010561231 its reverse (132165010751), we get a palindrome (289175571982).

The spelling of 157010561231 in words is "one hundred fifty-seven billion, ten million, five hundred sixty-one thousand, two hundred thirty-one".