697157407131 has 32 divisors (see below), whose sum is σ = 987883142400. Its totient is φ = 435806355456.

The previous prime is 697157407129. The next prime is 697157407153. The reversal of 697157407131 is 131704751796.

It is not a de Polignac number, because 697157407131 - 2¹ = 697157407129 is a prime.

It is a super-2 number, since 2×697157407131² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (697157407231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38616795 + ... + 38634843.

It is an arithmetic number, because the mean of its divisors is an integer number (30871348200).

Almost surely, 2^697157407131 is an apocalyptic number.

697157407131 is a deficient number, since it is larger than the sum of its proper divisors (290725735269).

697157407131 is a wasteful number, since it uses less digits than its factorization.

697157407131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20843.

The product of its (nonzero) digits is 1111320, while the sum is 51.

The spelling of 697157407131 in words is "six hundred ninety-seven billion, one hundred fifty-seven million, four hundred seven thousand, one hundred thirty-one".