1451113231 has 4 divisors (see below), whose sum is σ = 1457450200. Its totient is φ = 1444776264.

The previous prime is 1451113219. The next prime is 1451113241. The reversal of 1451113231 is 1323111541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323111541 = 1699 ⋅778759.

It is a cyclic number.

It is not a de Polignac number, because 1451113231 - 2²⁵ = 1417558799 is a prime.

It is a super-2 number, since 2×1451113231² = 4211459218366518722, 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 (1451113241) 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, 3168141 + ... + 3168598.

It is an arithmetic number, because the mean of its divisors is an integer number (364362550).

Almost surely, 2^1451113231 is an apocalyptic number.

1451113231 is a deficient number, since it is larger than the sum of its proper divisors (6336969).

1451113231 is an equidigital number, since it uses as much as digits as its factorization.

1451113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336968.

The product of its digits is 360, while the sum is 22.

The square root of 1451113231 is about 38093.4801639336. The cubic root of 1451113231 is about 1132.1407797607.

Adding to 1451113231 its reverse (1323111541), we get a palindrome (2774224772).

The spelling of 1451113231 in words is "one billion, four hundred fifty-one million, one hundred thirteen thousand, two hundred thirty-one".