451144431 has 16 divisors (see below), whose sum is σ = 676825600. Its totient is φ = 296954424.

The previous prime is 451144411. The next prime is 451144489. The reversal of 451144431 is 134441154.

It is not a de Polignac number, because 451144431 - 2¹³ = 451136239 is a prime.

It is a super-2 number, since 2×451144431² = 407062595244627522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451144395 and 451144404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451144411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103621 + ... + 107886.

It is an arithmetic number, because the mean of its divisors is an integer number (42301600).

Almost surely, 2^451144431 is an apocalyptic number.

451144431 is a deficient number, since it is larger than the sum of its proper divisors (225681169).

451144431 is a wasteful number, since it uses less digits than its factorization.

451144431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211595 (or 211589 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 451144431 is about 21240.1608044760. The cubic root of 451144431 is about 766.9585034101.

Adding to 451144431 its reverse (134441154), we get a palindrome (585585585).

The spelling of 451144431 in words is "four hundred fifty-one million, one hundred forty-four thousand, four hundred thirty-one".