231204091902452 has 18 divisors (see below), whose sum is σ = 419040234348918. Its totient is φ = 111615768503008.

The previous prime is 231204091902419. The next prime is 231204091902479. The reversal of 231204091902452 is 254209190402132.

It can be written as a sum of positive squares in 3 ways, for example, as 30201905131876 + 201002186770576 = 5495626^2 + 14177524^2 .

It is a super-2 number, since 2×231204091902452² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34364457383 + ... + 34364464110.

Almost surely, 2^{231204091902452} is an apocalyptic number.

It is an amenable number.

231204091902452 is a deficient number, since it is larger than the sum of its proper divisors (187836142446466).

231204091902452 is a wasteful number, since it uses less digits than its factorization.

231204091902452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68728921555 (or 68728921524 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 231204091902452 in words is "two hundred thirty-one trillion, two hundred four billion, ninety-one million, nine hundred two thousand, four hundred fifty-two".