361431971 has 4 divisors (see below), whose sum is σ = 361863600. Its totient is φ = 361000344.

The previous prime is 361431943. The next prime is 361431997. The reversal of 361431971 is 179134163.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 361431971 - 2⁶ = 361431907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361431911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214556 + ... + 216233.

It is an arithmetic number, because the mean of its divisors is an integer number (90465900).

Almost surely, 2^361431971 is an apocalyptic number.

361431971 is a deficient number, since it is larger than the sum of its proper divisors (431629).

361431971 is an equidigital number, since it uses as much as digits as its factorization.

361431971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431628.

The product of its digits is 13608, while the sum is 35.

The square root of 361431971 is about 19011.3642593055. The cubic root of 361431971 is about 712.3206293525.

The spelling of 361431971 in words is "three hundred sixty-one million, four hundred thirty-one thousand, nine hundred seventy-one".