431451121 has 4 divisors (see below), whose sum is σ = 441484912. Its totient is φ = 421417332.

The previous prime is 431451113. The next prime is 431451127. The reversal of 431451121 is 121154134.

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 431451121 - 2³ = 431451113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431451092 and 431451101.

It is not an unprimeable number, because it can be changed into a prime (431451127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5016831 + ... + 5016916.

It is an arithmetic number, because the mean of its divisors is an integer number (110371228).

Almost surely, 2^431451121 is an apocalyptic number.

It is an amenable number.

431451121 is a deficient number, since it is larger than the sum of its proper divisors (10033791).

431451121 is a wasteful number, since it uses less digits than its factorization.

431451121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10033790.

The product of its digits is 480, while the sum is 22.

The square root of 431451121 is about 20771.4015174711. The cubic root of 431451121 is about 755.6323348934.

The spelling of 431451121 in words is "four hundred thirty-one million, four hundred fifty-one thousand, one hundred twenty-one".