3111115033997 has 2 divisors, whose sum is σ = 3111115033998. Its totient is φ = 3111115033996.

The previous prime is 3111115033993. The next prime is 3111115034023. The reversal of 3111115033997 is 7993305111113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2317927080676 + 793187953321 = 1522474^2 + 890611^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111115033997 - 2² = 3111115033993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111115033993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555557516998 + 1555557516999.

It is an arithmetic number, because the mean of its divisors is an integer number (1555557516999).

Almost surely, 2^{3111115033997} is an apocalyptic number.

It is an amenable number.

3111115033997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111115033997 is an equidigital number, since it uses as much as digits as its factorization.

3111115033997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 44.

The spelling of 3111115033997 in words is "three trillion, one hundred eleven billion, one hundred fifteen million, thirty-three thousand, nine hundred ninety-seven".