31344403091 has 2 divisors, whose sum is σ = 31344403092. Its totient is φ = 31344403090.

The previous prime is 31344403067. The next prime is 31344403099. The reversal of 31344403091 is 19030444313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31344403091 is a prime.

It is not a weakly prime, because it can be changed into another prime (31344403099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15672201545 + 15672201546.

It is an arithmetic number, because the mean of its divisors is an integer number (15672201546).

Almost surely, 2^31344403091 is an apocalyptic number.

31344403091 is a deficient number, since it is larger than the sum of its proper divisors (1).

31344403091 is an equidigital number, since it uses as much as digits as its factorization.

31344403091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 31344403091 in words is "thirty-one billion, three hundred forty-four million, four hundred three thousand, ninety-one".