3131312407 has 2 divisors, whose sum is σ = 3131312408. Its totient is φ = 3131312406.

The previous prime is 3131312383. The next prime is 3131312411. The reversal of 3131312407 is 7042131313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3131312407 - 2⁷ = 3131312279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131312477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565656203 + 1565656204.

It is an arithmetic number, because the mean of its divisors is an integer number (1565656204).

Almost surely, 2^3131312407 is an apocalyptic number.

3131312407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131312407 is an equidigital number, since it uses as much as digits as its factorization.

3131312407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 3131312407 is about 55958.1308390479. The cubic root of 3131312407 is about 1462.9926118285.

The spelling of 3131312407 in words is "three billion, one hundred thirty-one million, three hundred twelve thousand, four hundred seven".