213074769831 has 48 divisors (see below), whose sum is σ = 366531282432. Its totient is φ = 107696571840.

The previous prime is 213074769781. The next prime is 213074769857. The reversal of 213074769831 is 138967470312.

It is a happy number.

It is not a de Polignac number, because 213074769831 - 2¹⁰ = 213074768807 is a prime.

It is a super-2 number, since 2×213074769831² (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 (213074769731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1039155 + ... + 1227188.

It is an arithmetic number, because the mean of its divisors is an integer number (7636068384).

Almost surely, 2^213074769831 is an apocalyptic number.

213074769831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213074769831 is a deficient number, since it is larger than the sum of its proper divisors (153456512601).

213074769831 is a wasteful number, since it uses less digits than its factorization.

213074769831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266412 (or 2266401 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 213074769831 in words is "two hundred thirteen billion, seventy-four million, seven hundred sixty-nine thousand, eight hundred thirty-one".