228813965831 has 12 divisors (see below), whose sum is σ = 262441317936. Its totient is φ = 198968663520.

The previous prime is 228813965819. The next prime is 228813965839. The reversal of 228813965831 is 138569318822.

It is a happy number.

It is not a de Polignac number, because 228813965831 - 2¹⁸ = 228813703687 is a prime.

It is a super-2 number, since 2×228813965831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228813965839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41106446 + ... + 41112011.

It is an arithmetic number, because the mean of its divisors is an integer number (21870109828).

Almost surely, 2^228813965831 is an apocalyptic number.

228813965831 is a deficient number, since it is larger than the sum of its proper divisors (33627352105).

228813965831 is a wasteful number, since it uses less digits than its factorization.

228813965831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82218502 (or 82218491 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 56.

The spelling of 228813965831 in words is "two hundred twenty-eight billion, eight hundred thirteen million, nine hundred sixty-five thousand, eight hundred thirty-one".