531240165001 has 32 divisors (see below), whose sum is σ = 657963299840. Its totient is φ = 420155491392.

The previous prime is 531240164993. The next prime is 531240165019. The reversal of 531240165001 is 100561042135.

It is not a de Polignac number, because 531240165001 - 2³ = 531240164993 is a prime.

It is a super-2 number, since 2×531240165001² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531240165031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51406831 + ... + 51417163.

It is an arithmetic number, because the mean of its divisors is an integer number (20561353120).

Almost surely, 2^531240165001 is an apocalyptic number.

It is an amenable number.

531240165001 is a deficient number, since it is larger than the sum of its proper divisors (126723134839).

531240165001 is a wasteful number, since it uses less digits than its factorization.

531240165001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722 (or 13696 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 531240165001 in words is "five hundred thirty-one billion, two hundred forty million, one hundred sixty-five thousand, one".