231956152021 has 8 divisors (see below), whose sum is σ = 253349061984. Its totient is φ = 210614239920.

The previous prime is 231956151983. The next prime is 231956152037. The reversal of 231956152021 is 120251659132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231956152021 - 2⁷ = 231956151893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231956152081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12739950 + ... + 12758143.

It is an arithmetic number, because the mean of its divisors is an integer number (31668632748).

Almost surely, 2^231956152021 is an apocalyptic number.

It is an amenable number.

231956152021 is a deficient number, since it is larger than the sum of its proper divisors (21392909963).

231956152021 is a wasteful number, since it uses less digits than its factorization.

231956152021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25498931.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 231956152021 in words is "two hundred thirty-one billion, nine hundred fifty-six million, one hundred fifty-two thousand, twenty-one".