1213352431 has 8 divisors (see below), whose sum is σ = 1295683200. Its totient is φ = 1133721120.

The previous prime is 1213352417. The next prime is 1213352447. The reversal of 1213352431 is 1342533121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1213352431 - 2¹⁵ = 1213319663 is a prime.

It is a super-2 number, since 2×1213352431² = 2944448243627219522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213352396 and 1213352405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213352131) 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, 673936 + ... + 675733.

It is an arithmetic number, because the mean of its divisors is an integer number (161960400).

Almost surely, 2^1213352431 is an apocalyptic number.

1213352431 is a deficient number, since it is larger than the sum of its proper divisors (82330769).

1213352431 is a wasteful number, since it uses less digits than its factorization.

1213352431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349729.

The product of its digits is 2160, while the sum is 25.

The square root of 1213352431 is about 34833.2087382142. The cubic root of 1213352431 is about 1066.5854499469.

Adding to 1213352431 its reverse (1342533121), we get a palindrome (2555885552).

The spelling of 1213352431 in words is "one billion, two hundred thirteen million, three hundred fifty-two thousand, four hundred thirty-one".