231676214640 has 80 divisors (see below), whose sum is σ = 773442142368. Its totient is φ = 57027990528.

The previous prime is 231676214629. The next prime is 231676214657. The reversal of 231676214640 is 46412676132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 231676214592 and 231676214601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37124479 + ... + 37130718.

Almost surely, 2^231676214640 is an apocalyptic number.

231676214640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231676214640 is an abundant number, since it is smaller than the sum of its proper divisors (541765927728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231676214640 is a wasteful number, since it uses less digits than its factorization.

231676214640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74255226 (or 74255220 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 231676214640 in words is "two hundred thirty-one billion, six hundred seventy-six million, two hundred fourteen thousand, six hundred forty".