1213302431 has 8 divisors (see below), whose sum is σ = 1324080000. Its totient is φ = 1102604440.

The previous prime is 1213302421. The next prime is 1213302439. The reversal of 1213302431 is 1342033121.

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 1213302431 - 2²² = 1209108127 is a prime.

It is a super-2 number, since 2×1213302431² = 2944205578141019522, 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 (1213302439) 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, 14600 + ... + 51378.

It is an arithmetic number, because the mean of its divisors is an integer number (165510000).

Almost surely, 2^1213302431 is an apocalyptic number.

1213302431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213302431 is a deficient number, since it is larger than the sum of its proper divisors (110777569).

1213302431 is a wasteful number, since it uses less digits than its factorization.

1213302431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39789.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1213302431 is about 34832.4910249037. The cubic root of 1213302431 is about 1066.5707990772.

Adding to 1213302431 its reverse (1342033121), we get a palindrome (2555335552).

The spelling of 1213302431 in words is "one billion, two hundred thirteen million, three hundred two thousand, four hundred thirty-one".