1213342431 has 8 divisors (see below), whose sum is σ = 1848902784. Its totient is φ = 693338520.

The previous prime is 1213342423. The next prime is 1213342441. The reversal of 1213342431 is 1342433121.

It is a happy number.

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

It is not a de Polignac number, because 1213342431 - 2³ = 1213342423 is a prime.

It is a super-2 number, since 2×1213342431² = 2944399709729979522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213342441) 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, 28889085 + ... + 28889126.

It is an arithmetic number, because the mean of its divisors is an integer number (231112848).

Almost surely, 2^1213342431 is an apocalyptic number.

1213342431 is a deficient number, since it is larger than the sum of its proper divisors (635560353).

1213342431 is an equidigital number, since it uses as much as digits as its factorization.

1213342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57778221.

The product of its digits is 1728, while the sum is 24.

The square root of 1213342431 is about 34833.0651967351. The cubic root of 1213342431 is about 1066.5825198052.

Adding to 1213342431 its reverse (1342433121), we get a palindrome (2555775552).

The spelling of 1213342431 in words is "one billion, two hundred thirteen million, three hundred forty-two thousand, four hundred thirty-one".