2331400397 has 2 divisors, whose sum is σ = 2331400398. Its totient is φ = 2331400396.

The previous prime is 2331400387. The next prime is 2331400427. The reversal of 2331400397 is 7930041332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2192018761 + 139381636 = 46819^2 + 11806^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331400397 - 2⁴ = 2331400381 is a prime.

It is a super-2 number, since 2×2331400397² = 10870855622263515218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2331400387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165700198 + 1165700199.

It is an arithmetic number, because the mean of its divisors is an integer number (1165700199).

Almost surely, 2^2331400397 is an apocalyptic number.

It is an amenable number.

2331400397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331400397 is an equidigital number, since it uses as much as digits as its factorization.

2331400397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 2331400397 is about 48284.5772167470. The cubic root of 2331400397 is about 1325.9860507728.

The spelling of 2331400397 in words is "two billion, three hundred thirty-one million, four hundred thousand, three hundred ninety-seven".