1231303413 has 8 divisors (see below), whose sum is σ = 1713117888. Its totient is φ = 785178944.

The previous prime is 1231303399. The next prime is 1231303433. The reversal of 1231303413 is 3143031321.

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 1231303413 - 2⁹ = 1231302901 is a prime.

It is a super-2 number, since 2×1231303413² = 3032216189730897138, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231303413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231303433) 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, 8922420 + ... + 8922557.

It is an arithmetic number, because the mean of its divisors is an integer number (214139736).

Almost surely, 2^1231303413 is an apocalyptic number.

It is an amenable number.

1231303413 is a deficient number, since it is larger than the sum of its proper divisors (481814475).

1231303413 is a wasteful number, since it uses less digits than its factorization.

1231303413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17845003.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1231303413 is about 35089.9332145275. The cubic root of 1231303413 is about 1071.8195996299.

Adding to 1231303413 its reverse (3143031321), we get a palindrome (4374334734).

The spelling of 1231303413 in words is "one billion, two hundred thirty-one million, three hundred three thousand, four hundred thirteen".