157009323 has 4 divisors (see below), whose sum is σ = 209345768. Its totient is φ = 104672880.

The previous prime is 157009309. The next prime is 157009337. The reversal of 157009323 is 323900751.

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

It is an interprime number because it is at equal distance from previous prime (157009309) and next prime (157009337).

It is a de Polignac number, because none of the positive numbers 2^k-157009323 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (157009123) 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, 26168218 + ... + 26168223.

It is an arithmetic number, because the mean of its divisors is an integer number (52336442).

Almost surely, 2^157009323 is an apocalyptic number.

157009323 is a deficient number, since it is larger than the sum of its proper divisors (52336445).

157009323 is an equidigital number, since it uses as much as digits as its factorization.

157009323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52336444.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 157009323 is about 12530.3361088201. The cubic root of 157009323 is about 539.4797492802.

The spelling of 157009323 in words is "one hundred fifty-seven million, nine thousand, three hundred twenty-three".