1230400331 has 4 divisors (see below), whose sum is σ = 1263654432. Its totient is φ = 1197146232.

The previous prime is 1230400319. The next prime is 1230400349. The reversal of 1230400331 is 1330040321.

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: 1330040321 = 1429 ⋅930749.

It is a cyclic number.

It is not a de Polignac number, because 1230400331 - 2¹⁰ = 1230399307 is a prime.

It is a super-2 number, since 2×1230400331² = 3027769949049819122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230400361) 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, 16626995 + ... + 16627068.

It is an arithmetic number, because the mean of its divisors is an integer number (315913608).

Almost surely, 2^1230400331 is an apocalyptic number.

1230400331 is a deficient number, since it is larger than the sum of its proper divisors (33254101).

1230400331 is an equidigital number, since it uses as much as digits as its factorization.

1230400331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33254100.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1230400331 is about 35077.0627476133. The cubic root of 1230400331 is about 1071.5574985873.

Adding to 1230400331 its reverse (1330040321), we get a palindrome (2560440652).

The spelling of 1230400331 in words is "one billion, two hundred thirty million, four hundred thousand, three hundred thirty-one".