2031313133 has 2 divisors, whose sum is σ = 2031313134. Its totient is φ = 2031313132.

The previous prime is 2031313121. The next prime is 2031313171. The reversal of 2031313133 is 3313131302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1804720324 + 226592809 = 42482^2 + 15053^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031313133 - 2²² = 2027118829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031313433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015656566 + 1015656567.

It is an arithmetic number, because the mean of its divisors is an integer number (1015656567).

Almost surely, 2^2031313133 is an apocalyptic number.

It is an amenable number.

2031313133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031313133 is an equidigital number, since it uses as much as digits as its factorization.

2031313133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 2031313133 is about 45070.0913356075. The cubic root of 2031313133 is about 1266.4623754173.

Adding to 2031313133 its reverse (3313131302), we get a palindrome (5344444435).

The spelling of 2031313133 in words is "two billion, thirty-one million, three hundred thirteen thousand, one hundred thirty-three".