361399231 has 2 divisors, whose sum is σ = 361399232. Its totient is φ = 361399230.

The previous prime is 361399217. The next prime is 361399267. The reversal of 361399231 is 132993163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361399231 - 2¹⁵ = 361366463 is a prime.

It is a super-2 number, since 2×361399231² = 261218808334782722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361399211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180699615 + 180699616.

It is an arithmetic number, because the mean of its divisors is an integer number (180699616).

Almost surely, 2^361399231 is an apocalyptic number.

361399231 is a deficient number, since it is larger than the sum of its proper divisors (1).

361399231 is an equidigital number, since it uses as much as digits as its factorization.

361399231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 37.

The square root of 361399231 is about 19010.5031758762. The cubic root of 361399231 is about 712.2991203886.

The spelling of 361399231 in words is "three hundred sixty-one million, three hundred ninety-nine thousand, two hundred thirty-one".