31077413 has 2 divisors, whose sum is σ = 31077414. Its totient is φ = 31077412.

The previous prime is 31077379. The next prime is 31077463. The reversal of 31077413 is 31477013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27699169 + 3378244 = 5263^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 31077413 - 2¹⁸ = 30815269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31077463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15538706 + 15538707.

It is an arithmetic number, because the mean of its divisors is an integer number (15538707).

Almost surely, 2^31077413 is an apocalyptic number.

It is an amenable number.

31077413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31077413 is an equidigital number, since it uses as much as digits as its factorization.

31077413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 31077413 is about 5574.7119208081. The cubic root of 31077413 is about 314.3993357286.

The spelling of 31077413 in words is "thirty-one million, seventy-seven thousand, four hundred thirteen".