157107031 has 4 divisors (see below), whose sum is σ = 157304952. Its totient is φ = 156909112.

The previous prime is 157107019. The next prime is 157107037. The reversal of 157107031 is 130701751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130701751 = 89 ⋅1468559.

It is a cyclic number.

It is not a de Polignac number, because 157107031 - 2⁹ = 157106519 is a prime.

It is a super-2 number, since 2×157107031² = 49365238379269922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157106987 and 157107005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157107037) 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, 97765 + ... + 99358.

It is an arithmetic number, because the mean of its divisors is an integer number (39326238).

Almost surely, 2^157107031 is an apocalyptic number.

157107031 is a deficient number, since it is larger than the sum of its proper divisors (197921).

157107031 is an equidigital number, since it uses as much as digits as its factorization.

157107031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197920.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 157107031 is about 12534.2343603429. The cubic root of 157107031 is about 539.5916334152.

Adding to 157107031 its reverse (130701751), we get a palindrome (287808782).

The spelling of 157107031 in words is "one hundred fifty-seven million, one hundred seven thousand, thirty-one".