31231231230977 has 16 divisors (see below), whose sum is σ = 34967646895104. Its totient is φ = 27752100672000.

The previous prime is 31231231230973. The next prime is 31231231231019. The reversal of 31231231230977 is 77903213213213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31231231230977 - 2² = 31231231230973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31231231230973) 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 15 ways as a sum of consecutive naturals, for example, 722689349 + ... + 722732562.

It is an arithmetic number, because the mean of its divisors is an integer number (2185477930944).

Almost surely, 2^{31231231230977} is an apocalyptic number.

It is an amenable number.

31231231230977 is a deficient number, since it is larger than the sum of its proper divisors (3736415664127).

31231231230977 is a wasteful number, since it uses less digits than its factorization.

31231231230977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445422000.

The product of its (nonzero) digits is 285768, while the sum is 44.

The spelling of 31231231230977 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred thirty-one million, two hundred thirty thousand, nine hundred seventy-seven".