31111019963 has 2 divisors, whose sum is σ = 31111019964. Its totient is φ = 31111019962.

The previous prime is 31111019917. The next prime is 31111020019. The reversal of 31111019963 is 36991011113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31111019963 is a prime.

It is not a weakly prime, because it can be changed into another prime (31111019903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15555509981 + 15555509982.

It is an arithmetic number, because the mean of its divisors is an integer number (15555509982).

Almost surely, 2^31111019963 is an apocalyptic number.

31111019963 is a deficient number, since it is larger than the sum of its proper divisors (1).

31111019963 is an equidigital number, since it uses as much as digits as its factorization.

31111019963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The spelling of 31111019963 in words is "thirty-one billion, one hundred eleven million, nineteen thousand, nine hundred sixty-three".