231672792977 has 4 divisors (see below), whose sum is σ = 231680510436. Its totient is φ = 231665075520.

The previous prime is 231672792961. The next prime is 231672792991. The reversal of 231672792977 is 779297276132.

231672792977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 481324²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18451418896 + 213221374081 = 135836^2 + 461759^2 .

It is a cyclic number.

It is not a de Polignac number, because 231672792977 - 2⁴ = 231672792961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231672792947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3813524 + ... + 3873797.

It is an arithmetic number, because the mean of its divisors is an integer number (57920127609).

Almost surely, 2^231672792977 is an apocalyptic number.

It is an amenable number.

231672792977 is a deficient number, since it is larger than the sum of its proper divisors (7717459).

231672792977 is an equidigital number, since it uses as much as digits as its factorization.

231672792977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717458.

The product of its digits is 28005264, while the sum is 62.

The spelling of 231672792977 in words is "two hundred thirty-one billion, six hundred seventy-two million, seven hundred ninety-two thousand, nine hundred seventy-seven".