1230423031 has 4 divisors (see below), whose sum is σ = 1230724872. Its totient is φ = 1230121192.

The previous prime is 1230423017. The next prime is 1230423083. The reversal of 1230423031 is 1303240321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230423031 - 2⁷ = 1230422903 is a prime.

It is a super-2 number, since 2×1230423031² = 3027881670430453922, 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 (1230423091) 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, 144721 + ... + 152986.

It is an arithmetic number, because the mean of its divisors is an integer number (307681218).

Almost surely, 2^1230423031 is an apocalyptic number.

1230423031 is a deficient number, since it is larger than the sum of its proper divisors (301841).

1230423031 is an equidigital number, since it uses as much as digits as its factorization.

1230423031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301840.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1230423031 is about 35077.3863193939. The cubic root of 1230423031 is about 1071.5640883682.

Adding to 1230423031 its reverse (1303240321), we get a palindrome (2533663352).

The spelling of 1230423031 in words is "one billion, two hundred thirty million, four hundred twenty-three thousand, thirty-one".