1125230431 has 8 divisors (see below), whose sum is σ = 1237569984. Its totient is φ = 1016574240.

The previous prime is 1125230423. The next prime is 1125230443. The reversal of 1125230431 is 1340325211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125230431 - 2³ = 1125230423 is a prime.

It is a super-2 number, since 2×1125230431² = 2532287045696891522, 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 (1125230411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920200 + ... + 921421.

It is an arithmetic number, because the mean of its divisors is an integer number (154696248).

Almost surely, 2^1125230431 is an apocalyptic number.

1125230431 is a deficient number, since it is larger than the sum of its proper divisors (112339553).

1125230431 is a wasteful number, since it uses less digits than its factorization.

1125230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841681.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1125230431 is about 33544.4545491501. The cubic root of 1125230431 is about 1040.1129164257.

Adding to 1125230431 its reverse (1340325211), we get a palindrome (2465555642).

The spelling of 1125230431 in words is "one billion, one hundred twenty-five million, two hundred thirty thousand, four hundred thirty-one".