1232421031 has 4 divisors (see below), whose sum is σ = 1255674312. Its totient is φ = 1209167752.

The previous prime is 1232421019. The next prime is 1232421061. The reversal of 1232421031 is 1301242321.

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: 1301242321 = 1163 ⋅1118867.

It is a cyclic number.

It is not a de Polignac number, because 1232421031 - 2⁵ = 1232420999 is a prime.

It is a super-2 number, since 2×1232421031² = 3037723195302205922, 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 (1232421011) 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, 11626561 + ... + 11626666.

It is an arithmetic number, because the mean of its divisors is an integer number (313918578).

Almost surely, 2^1232421031 is an apocalyptic number.

1232421031 is a deficient number, since it is larger than the sum of its proper divisors (23253281).

1232421031 is an equidigital number, since it uses as much as digits as its factorization.

1232421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23253280.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1232421031 is about 35105.8546541741. The cubic root of 1232421031 is about 1072.1437879708.

Adding to 1232421031 its reverse (1301242321), we get a palindrome (2533663352).

The spelling of 1232421031 in words is "one billion, two hundred thirty-two million, four hundred twenty-one thousand, thirty-one".