1303386431 has 4 divisors (see below), whose sum is σ = 1303476912. Its totient is φ = 1303295952.

The previous prime is 1303386407. The next prime is 1303386439. The reversal of 1303386431 is 1346833031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303386431 is a prime.

It is a super-2 number, since 2×1303386431² = 3397632377029835522, 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 (1303386439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18275 + ... + 54228.

It is an arithmetic number, because the mean of its divisors is an integer number (325869228).

Almost surely, 2^1303386431 is an apocalyptic number.

1303386431 is a deficient number, since it is larger than the sum of its proper divisors (90481).

1303386431 is an equidigital number, since it uses as much as digits as its factorization.

1303386431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90480.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1303386431 is about 36102.4435599587. The cubic root of 1303386431 is about 1092.3397348810.

The spelling of 1303386431 in words is "one billion, three hundred three million, three hundred eighty-six thousand, four hundred thirty-one".