431660157 has 16 divisors (see below), whose sum is σ = 596376000. Its totient is φ = 277391744.

The previous prime is 431660147. The next prime is 431660197. The reversal of 431660157 is 751066134.

It is a cyclic number.

It is not a de Polignac number, because 431660157 - 2¹¹ = 431658109 is a prime.

It is a super-2 number, since 2×431660157² = 372660982282529298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431660137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53569 + ... + 61097.

It is an arithmetic number, because the mean of its divisors is an integer number (37273500).

Almost surely, 2^431660157 is an apocalyptic number.

It is an amenable number.

431660157 is a deficient number, since it is larger than the sum of its proper divisors (164715843).

431660157 is a wasteful number, since it uses less digits than its factorization.

431660157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8220.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 431660157 is about 20776.4327303799. The cubic root of 431660157 is about 755.7543486052.

The spelling of 431660157 in words is "four hundred thirty-one million, six hundred sixty thousand, one hundred fifty-seven".