31089103453997 has 2 divisors, whose sum is σ = 31089103453998. Its totient is φ = 31089103453996.

The previous prime is 31089103453957. The next prime is 31089103454099. The reversal of 31089103453997 is 79935430198013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24407364425161 + 6681739028836 = 4940381^2 + 2584906^2 .

It is a cyclic number.

It is not a de Polignac number, because 31089103453997 - 2³² = 31084808486701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31089103453937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15544551726998 + 15544551726999.

It is an arithmetic number, because the mean of its divisors is an integer number (15544551726999).

Almost surely, 2^{31089103453997} is an apocalyptic number.

It is an amenable number.

31089103453997 is a deficient number, since it is larger than the sum of its proper divisors (1).

31089103453997 is an equidigital number, since it uses as much as digits as its factorization.

31089103453997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 31089103453997 in words is "thirty-one trillion, eighty-nine billion, one hundred three million, four hundred fifty-three thousand, nine hundred ninety-seven".