657134542131 has 8 divisors (see below), whose sum is σ = 876199465680. Its totient is φ = 438079656672.

The previous prime is 657134542123. The next prime is 657134542189. The reversal of 657134542131 is 131245431756.

It is a happy number.

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

It is not a de Polignac number, because 657134542131 - 2³ = 657134542123 is a prime.

It is a super-2 number, since 2×657134542131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (657134942131) 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, 2355420 + ... + 2619593.

It is an arithmetic number, because the mean of its divisors is an integer number (109524933210).

Almost surely, 2^657134542131 is an apocalyptic number.

657134542131 is a deficient number, since it is larger than the sum of its proper divisors (219064923549).

657134542131 is a wasteful number, since it uses less digits than its factorization.

657134542131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019045.

The product of its digits is 302400, while the sum is 42.

Adding to 657134542131 its reverse (131245431756), we get a palindrome (788379973887).

The spelling of 657134542131 in words is "six hundred fifty-seven billion, one hundred thirty-four million, five hundred forty-two thousand, one hundred thirty-one".