1247331903 has 16 divisors (see below), whose sum is σ = 1726703616. Its totient is φ = 800068320.

The previous prime is 1247331881. The next prime is 1247331907. The reversal of 1247331903 is 3091337421.

1247331903 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1247331903 - 2²⁵ = 1213777471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247331907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22675 + ... + 54852.

It is an arithmetic number, because the mean of its divisors is an integer number (107918976).

Almost surely, 2^1247331903 is an apocalyptic number.

1247331903 is a deficient number, since it is larger than the sum of its proper divisors (479371713).

1247331903 is a wasteful number, since it uses less digits than its factorization.

1247331903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77734.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 1247331903 is about 35317.5863133369. The cubic root of 1247331903 is about 1076.4503669599.

The spelling of 1247331903 in words is "one billion, two hundred forty-seven million, three hundred thirty-one thousand, nine hundred three".