312492133 has 2 divisors, whose sum is σ = 312492134. Its totient is φ = 312492132.

The previous prime is 312492101. The next prime is 312492151. The reversal of 312492133 is 331294213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308423844 + 4068289 = 17562^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 312492133 - 2⁵ = 312492101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312492233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156246066 + 156246067.

It is an arithmetic number, because the mean of its divisors is an integer number (156246067).

Almost surely, 2^312492133 is an apocalyptic number.

It is an amenable number.

312492133 is a deficient number, since it is larger than the sum of its proper divisors (1).

312492133 is an equidigital number, since it uses as much as digits as its factorization.

312492133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 312492133 is about 17677.4470159014. The cubic root of 312492133 is about 678.5987096147.

The spelling of 312492133 in words is "three hundred twelve million, four hundred ninety-two thousand, one hundred thirty-three".