3131012434387 has 2 divisors, whose sum is σ = 3131012434388. Its totient is φ = 3131012434386.

The previous prime is 3131012434373. The next prime is 3131012434397. The reversal of 3131012434387 is 7834342101313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131012434387 is a prime.

It is not a weakly prime, because it can be changed into another prime (3131012434327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565506217193 + 1565506217194.

It is an arithmetic number, because the mean of its divisors is an integer number (1565506217194).

Almost surely, 2^{3131012434387} is an apocalyptic number.

3131012434387 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131012434387 is an equidigital number, since it uses as much as digits as its factorization.

3131012434387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 3131012434387 in words is "three trillion, one hundred thirty-one billion, twelve million, four hundred thirty-four thousand, three hundred eighty-seven".