31231313826101 has 2 divisors, whose sum is σ = 31231313826102. Its totient is φ = 31231313826100.

The previous prime is 31231313825983. The next prime is 31231313826127. The reversal of 31231313826101 is 10162831313213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27458920495876 + 3772393330225 = 5240126^2 + 1942265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31231313826101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231373826101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615656913050 + 15615656913051.

It is an arithmetic number, because the mean of its divisors is an integer number (15615656913051).

Almost surely, 2^{31231313826101} is an apocalyptic number.

It is an amenable number.

31231313826101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231313826101 is an equidigital number, since it uses as much as digits as its factorization.

31231313826101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 31231313826101 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred thirteen million, eight hundred twenty-six thousand, one hundred one".