31023212377 has 2 divisors, whose sum is σ = 31023212378. Its totient is φ = 31023212376.

The previous prime is 31023212329. The next prime is 31023212431. The reversal of 31023212377 is 77321232013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20340749641 + 10682462736 = 142621^2 + 103356^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023212377 - 2⁷ = 31023212249 is a prime.

It is not a weakly prime, because it can be changed into another prime (31023218377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511606188 + 15511606189.

It is an arithmetic number, because the mean of its divisors is an integer number (15511606189).

Almost surely, 2^31023212377 is an apocalyptic number.

It is an amenable number.

31023212377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023212377 is an equidigital number, since it uses as much as digits as its factorization.

31023212377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 31023212377 in words is "thirty-one billion, twenty-three million, two hundred twelve thousand, three hundred seventy-seven".