531023172863403 has 16 divisors (see below), whose sum is σ = 817832480132736. Its totient is φ = 302900918567040.

The previous prime is 531023172863353. The next prime is 531023172863419. The reversal of 531023172863403 is 304368271320135.

It is a happy number.

It is not a de Polignac number, because 531023172863403 - 2²² = 531023168669099 is a prime.

It is a super-2 number, since 2×531023172863403² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531023172863003) 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, 473282684701 + ... + 473282685822.

It is an arithmetic number, because the mean of its divisors is an integer number (51114530008296).

Almost surely, 2^{531023172863403} is an apocalyptic number.

531023172863403 is a deficient number, since it is larger than the sum of its proper divisors (286809307269333).

531023172863403 is a wasteful number, since it uses less digits than its factorization.

531023172863403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946565370554.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 531023172863403 in words is "five hundred thirty-one trillion, twenty-three billion, one hundred seventy-two million, eight hundred sixty-three thousand, four hundred three".