231899486277 has 8 divisors (see below), whose sum is σ = 309213122400. Its totient is φ = 154592753840.

The previous prime is 231899486249. The next prime is 231899486279. The reversal of 231899486277 is 772684998132.

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 231899486277 - 2¹² = 231899482181 is a prime.

It is a super-2 number, since 2×231899486277² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231899486279) 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, 1647027 + ... + 1782272.

It is an arithmetic number, because the mean of its divisors is an integer number (38651640300).

Almost surely, 2^231899486277 is an apocalyptic number.

It is an amenable number.

231899486277 is a deficient number, since it is larger than the sum of its proper divisors (77313636123).

231899486277 is a wasteful number, since it uses less digits than its factorization.

231899486277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451843.

The product of its digits is 73156608, while the sum is 66.

The spelling of 231899486277 in words is "two hundred thirty-one billion, eight hundred ninety-nine million, four hundred eighty-six thousand, two hundred seventy-seven".