1232121431 has 8 divisors (see below), whose sum is σ = 1286803584. Its totient is φ = 1177531960.

The previous prime is 1232121421. The next prime is 1232121467. The reversal of 1232121431 is 1341212321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232121431 is a prime.

It is a super-2 number, since 2×1232121431² = 3036246441458975522, 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 (1232121421) 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, 4736 + ... + 49866.

It is an arithmetic number, because the mean of its divisors is an integer number (160850448).

Almost surely, 2^1232121431 is an apocalyptic number.

1232121431 is a deficient number, since it is larger than the sum of its proper divisors (54682153).

1232121431 is a wasteful number, since it uses less digits than its factorization.

1232121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46341.

The product of its digits is 288, while the sum is 20.

The square root of 1232121431 is about 35101.5873002917. The cubic root of 1232121431 is about 1072.0569019951.

Adding to 1232121431 its reverse (1341212321), we get a palindrome (2573333752).

The spelling of 1232121431 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, four hundred thirty-one".