431262421 has 4 divisors (see below), whose sum is σ = 445174144. Its totient is φ = 417350700.

The previous prime is 431262413. The next prime is 431262457. The reversal of 431262421 is 124262134.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 431262421 - 2³ = 431262413 is a prime.

It is a super-3 number, since 3×431262421³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431262401) 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, 6955815 + ... + 6955876.

It is an arithmetic number, because the mean of its divisors is an integer number (111293536).

Almost surely, 2^431262421 is an apocalyptic number.

It is an amenable number.

431262421 is a deficient number, since it is larger than the sum of its proper divisors (13911723).

431262421 is a wasteful number, since it uses less digits than its factorization.

431262421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13911722.

The product of its digits is 2304, while the sum is 25.

The square root of 431262421 is about 20766.8587176780. The cubic root of 431262421 is about 755.5221573961.

The spelling of 431262421 in words is "four hundred thirty-one million, two hundred sixty-two thousand, four hundred twenty-one".