1231311413 has 8 divisors (see below), whose sum is σ = 1291869696. Its totient is φ = 1172055600.

The previous prime is 1231311383. The next prime is 1231311421. The reversal of 1231311413 is 3141131321.

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 1231311413 - 2¹⁶ = 1231245877 is a prime.

It is a super-2 number, since 2×1231311413² = 3032255591568113138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231319413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323681 + ... + 327462.

It is an arithmetic number, because the mean of its divisors is an integer number (161483712).

Almost surely, 2^1231311413 is an apocalyptic number.

It is an amenable number.

1231311413 is a deficient number, since it is larger than the sum of its proper divisors (60558283).

1231311413 is an equidigital number, since it uses as much as digits as its factorization.

1231311413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651235.

The product of its digits is 216, while the sum is 20.

The square root of 1231311413 is about 35090.0472071498. The cubic root of 1231311413 is about 1071.8219208932.

Adding to 1231311413 its reverse (3141131321), we get a palindrome (4372442734).

The spelling of 1231311413 in words is "one billion, two hundred thirty-one million, three hundred eleven thousand, four hundred thirteen".