201457657431 has 6 divisors (see below), whose sum is σ = 290994394080. Its totient is φ = 134305104948.

The previous prime is 201457657393. The next prime is 201457657433. The reversal of 201457657431 is 134756754102.

201457657431 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 5 + 76 + 574 + 3 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-201457657431 is a prime.

It is a super-2 number, since 2×201457657431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201457657433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11192092071 + ... + 11192092088.

It is an arithmetic number, because the mean of its divisors is an integer number (48499065680).

Almost surely, 2^201457657431 is an apocalyptic number.

201457657431 is a deficient number, since it is larger than the sum of its proper divisors (89536736649).

201457657431 is a wasteful number, since it uses less digits than its factorization.

201457657431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22384184165 (or 22384184162 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 201457657431 in words is "two hundred one billion, four hundred fifty-seven million, six hundred fifty-seven thousand, four hundred thirty-one".