1230431531 has 8 divisors (see below), whose sum is σ = 1406590944. Its totient is φ = 1054368000.

The previous prime is 1230431513. The next prime is 1230431537. The reversal of 1230431531 is 1351340321.

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

It is not a de Polignac number, because 1230431531 - 2¹⁰ = 1230430507 is a prime.

It is a super-2 number, since 2×1230431531² = 3027923504958007922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230431497 and 1230431506.

It is not an unprimeable number, because it can be changed into a prime (1230431537) 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, 6041 + ... + 49973.

It is an arithmetic number, because the mean of its divisors is an integer number (175823868).

Almost surely, 2^1230431531 is an apocalyptic number.

1230431531 is a deficient number, since it is larger than the sum of its proper divisors (176159413).

1230431531 is an equidigital number, since it uses as much as digits as its factorization.

1230431531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47941.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1230431531 is about 35077.5074798652. The cubic root of 1230431531 is about 1071.5665558864.

Adding to 1230431531 its reverse (1351340321), we get a palindrome (2581771852).

The spelling of 1230431531 in words is "one billion, two hundred thirty million, four hundred thirty-one thousand, five hundred thirty-one".