431401233 has 4 divisors (see below), whose sum is σ = 575201648. Its totient is φ = 287600820.

The previous prime is 431401207. The next prime is 431401253. The reversal of 431401233 is 332104134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 431401233 - 2⁶ = 431401169 is a prime.

It is a super-2 number, since 2×431401233² = 372214047667840578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431401253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71900203 + ... + 71900208.

It is an arithmetic number, because the mean of its divisors is an integer number (143800412).

Almost surely, 2^431401233 is an apocalyptic number.

It is an amenable number.

431401233 is a deficient number, since it is larger than the sum of its proper divisors (143800415).

431401233 is a wasteful number, since it uses less digits than its factorization.

431401233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143800414.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 431401233 is about 20770.2006008608. The cubic root of 431401233 is about 755.6032095864.

Adding to 431401233 its reverse (332104134), we get a palindrome (763505367).

The spelling of 431401233 in words is "four hundred thirty-one million, four hundred one thousand, two hundred thirty-three".