451040431 has 4 divisors (see below), whose sum is σ = 452269792. Its totient is φ = 449811072.

The previous prime is 451040383. The next prime is 451040437. The reversal of 451040431 is 134040154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134040154 = 2 ⋅67020077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451040431 is a prime.

It is a super-2 number, since 2×451040431² = 406874940793331522, which contains 22 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 (451040437) 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, 614130 + ... + 614863.

It is an arithmetic number, because the mean of its divisors is an integer number (113067448).

Almost surely, 2^451040431 is an apocalyptic number.

451040431 is a deficient number, since it is larger than the sum of its proper divisors (1229361).

451040431 is a wasteful number, since it uses less digits than its factorization.

451040431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229360.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 451040431 is about 21237.7124709795. The cubic root of 451040431 is about 766.8995645509.

Adding to 451040431 its reverse (134040154), we get a palindrome (585080585).

The spelling of 451040431 in words is "four hundred fifty-one million, forty thousand, four hundred thirty-one".