431242390 has 32 divisors (see below), whose sum is σ = 803675520. Its totient is φ = 166500864.

The previous prime is 431242321. The next prime is 431242391. The reversal of 431242390 is 93242134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431242391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28026 + ... + 40594.

It is an arithmetic number, because the mean of its divisors is an integer number (25114860).

Almost surely, 2^431242390 is an apocalyptic number.

431242390 is a deficient number, since it is larger than the sum of its proper divisors (372433130).

431242390 is a wasteful number, since it uses less digits than its factorization.

431242390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12696.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 431242390 is about 20766.3764292185. The cubic root of 431242390 is about 755.5104598790.

The spelling of 431242390 in words is "four hundred thirty-one million, two hundred forty-two thousand, three hundred ninety".