111323310997 has 2 divisors, whose sum is σ = 111323310998. Its totient is φ = 111323310996.

The previous prime is 111323310941. The next prime is 111323311049. The reversal of 111323310997 is 799013323111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111298300996 + 25010001 = 333614^2 + 5001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111323310997 is a prime.

It is a super-2 number, since 2×111323310997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111323310907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55661655498 + 55661655499.

It is an arithmetic number, because the mean of its divisors is an integer number (55661655499).

Almost surely, 2^111323310997 is an apocalyptic number.

It is an amenable number.

111323310997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111323310997 is an equidigital number, since it uses as much as digits as its factorization.

111323310997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The spelling of 111323310997 in words is "one hundred eleven billion, three hundred twenty-three million, three hundred ten thousand, nine hundred ninety-seven".