431390 has 16 divisors (see below), whose sum is σ = 784080. Its totient is φ = 170880.

The previous prime is 431381. The next prime is 431399. The reversal of 431390 is 93134.

It is an interprime number because it is at equal distance from previous prime (431381) and next prime (431399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670 + ... + 1910.

It is an arithmetic number, because the mean of its divisors is an integer number (49005).

2⁴³¹³⁹⁰ is an apocalyptic number.

431390 is a deficient number, since it is larger than the sum of its proper divisors (352690).

431390 is a wasteful number, since it uses less digits than its factorization.

431390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 431390 is about 656.8028623567. The cubic root of 431390 is about 75.5596651295.

The spelling of 431390 in words is "four hundred thirty-one thousand, three hundred ninety".