612198131 has 2 divisors, whose sum is σ = 612198132. Its totient is φ = 612198130.

The previous prime is 612198089. The next prime is 612198151. The reversal of 612198131 is 131891216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612198131 - 2¹⁰ = 612197107 is a prime.

It is a super-2 number, since 2×612198131² = 749573103199786322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (612198151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306099065 + 306099066.

It is an arithmetic number, because the mean of its divisors is an integer number (306099066).

Almost surely, 2^612198131 is an apocalyptic number.

612198131 is a deficient number, since it is larger than the sum of its proper divisors (1).

612198131 is an equidigital number, since it uses as much as digits as its factorization.

612198131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 612198131 is about 24742.6379151456. The cubic root of 612198131 is about 849.1100863861.

The spelling of 612198131 in words is "six hundred twelve million, one hundred ninety-eight thousand, one hundred thirty-one".