31031220011159 has 2 divisors, whose sum is σ = 31031220011160. Its totient is φ = 31031220011158.

The previous prime is 31031220011053. The next prime is 31031220011203. The reversal of 31031220011159 is 95111002213013.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31031220011159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31031220010159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515610005579 + 15515610005580.

It is an arithmetic number, because the mean of its divisors is an integer number (15515610005580).

Almost surely, 2^{31031220011159} is an apocalyptic number.

31031220011159 is a deficient number, since it is larger than the sum of its proper divisors (1).

31031220011159 is an equidigital number, since it uses as much as digits as its factorization.

31031220011159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The spelling of 31031220011159 in words is "thirty-one trillion, thirty-one billion, two hundred twenty million, eleven thousand, one hundred fifty-nine".