31023100101397 has 2 divisors, whose sum is σ = 31023100101398. Its totient is φ = 31023100101396.

The previous prime is 31023100101277. The next prime is 31023100101419. The reversal of 31023100101397 is 79310100132013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28695724071921 + 2327376029476 = 5356839^2 + 1525574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023100101397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023100161397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511550050698 + 15511550050699.

It is an arithmetic number, because the mean of its divisors is an integer number (15511550050699).

Almost surely, 2^{31023100101397} is an apocalyptic number.

It is an amenable number.

31023100101397 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023100101397 is an equidigital number, since it uses as much as digits as its factorization.

31023100101397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The spelling of 31023100101397 in words is "thirty-one trillion, twenty-three billion, one hundred million, one hundred one thousand, three hundred ninety-seven".