1311480623 has 4 divisors (see below), whose sum is σ = 1388626560. Its totient is φ = 1234334688.

The previous prime is 1311480557. The next prime is 1311480641. The reversal of 1311480623 is 3260841131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311480623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311480673) 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, 38572943 + ... + 38572976.

It is an arithmetic number, because the mean of its divisors is an integer number (347156640).

Almost surely, 2^1311480623 is an apocalyptic number.

1311480623 is a deficient number, since it is larger than the sum of its proper divisors (77145937).

1311480623 is an equidigital number, since it uses as much as digits as its factorization.

1311480623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77145936.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1311480623 is about 36214.3703935330. The cubic root of 1311480623 is about 1094.5962587902.

The spelling of 1311480623 in words is "one billion, three hundred eleven million, four hundred eighty thousand, six hundred twenty-three".