31836880133 has 2 divisors, whose sum is σ = 31836880134. Its totient is φ = 31836880132.

The previous prime is 31836880109. The next prime is 31836880147. The reversal of 31836880133 is 33108863813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31200983044 + 635897089 = 176638^2 + 25217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31836880133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31836888133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15918440066 + 15918440067.

It is an arithmetic number, because the mean of its divisors is an integer number (15918440067).

Almost surely, 2^31836880133 is an apocalyptic number.

It is an amenable number.

31836880133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31836880133 is an equidigital number, since it uses as much as digits as its factorization.

31836880133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 31836880133 in words is "thirty-one billion, eight hundred thirty-six million, eight hundred eighty thousand, one hundred thirty-three".