31343393087 has 2 divisors, whose sum is σ = 31343393088. Its totient is φ = 31343393086.

The previous prime is 31343393063. The next prime is 31343393113. The reversal of 31343393087 is 78039334313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31343393087 - 2¹² = 31343388991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31343393057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671696543 + 15671696544.

It is an arithmetic number, because the mean of its divisors is an integer number (15671696544).

Almost surely, 2^31343393087 is an apocalyptic number.

31343393087 is a deficient number, since it is larger than the sum of its proper divisors (1).

31343393087 is an equidigital number, since it uses as much as digits as its factorization.

31343393087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 31343393087 in words is "thirty-one billion, three hundred forty-three million, three hundred ninety-three thousand, eighty-seven".