157319047331 has 4 divisors (see below), whose sum is σ = 160666261152. Its totient is φ = 153971833512.

The previous prime is 157319047313. The next prime is 157319047337. The reversal of 157319047331 is 133740913751.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157319047331 is a prime.

It is a super-2 number, since 2×157319047331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157319047337) 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, 1673606840 + ... + 1673606933.

It is an arithmetic number, because the mean of its divisors is an integer number (40166565288).

Almost surely, 2^157319047331 is an apocalyptic number.

157319047331 is a deficient number, since it is larger than the sum of its proper divisors (3347213821).

157319047331 is an equidigital number, since it uses as much as digits as its factorization.

157319047331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347213820.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 157319047331 in words is "one hundred fifty-seven billion, three hundred nineteen million, forty-seven thousand, three hundred thirty-one".