157231277 has 8 divisors (see below), whose sum is σ = 181546176. Its totient is φ = 133379712.

The previous prime is 157231259. The next prime is 157231297. The reversal of 157231277 is 772132751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157231277 - 2¹⁰ = 157230253 is a prime.

It is a super-3 number, since 3×157231277³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157231237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115103 + ... + 116460.

It is an arithmetic number, because the mean of its divisors is an integer number (22693272).

Almost surely, 2^157231277 is an apocalyptic number.

It is an amenable number.

157231277 is a deficient number, since it is larger than the sum of its proper divisors (24314899).

157231277 is an equidigital number, since it uses as much as digits as its factorization.

157231277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231667.

The product of its digits is 20580, while the sum is 35.

The square root of 157231277 is about 12539.1896468631. The cubic root of 157231277 is about 539.7338388834.

The spelling of 157231277 in words is "one hundred fifty-seven million, two hundred thirty-one thousand, two hundred seventy-seven".