157307323 has 4 divisors (see below), whose sum is σ = 157349800. Its totient is φ = 157264848.

The previous prime is 157307303. The next prime is 157307351. The reversal of 157307323 is 323703751.

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-157307323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157307303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15090 + ... + 23287.

It is an arithmetic number, because the mean of its divisors is an integer number (39337450).

Almost surely, 2^157307323 is an apocalyptic number.

157307323 is a deficient number, since it is larger than the sum of its proper divisors (42477).

157307323 is an equidigital number, since it uses as much as digits as its factorization.

157307323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42476.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 157307323 is about 12542.2216134144. The cubic root of 157307323 is about 539.8208401996.

The spelling of 157307323 in words is "one hundred fifty-seven million, three hundred seven thousand, three hundred twenty-three".