1310139 has 12 divisors (see below), whose sum is σ = 2003976. Its totient is φ = 821952.

The previous prime is 1310137. The next prime is 1310143. The reversal of 1310139 is 9310131.

It is not a de Polignac number, because 1310139 - 2¹ = 1310137 is a prime.

1310139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1310137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4129 + ... + 4434.

It is an arithmetic number, because the mean of its divisors is an integer number (166998).

2^1310139 is an apocalyptic number.

1310139 is a deficient number, since it is larger than the sum of its proper divisors (693837).

1310139 is a wasteful number, since it uses less digits than its factorization.

1310139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586 (or 8583 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 1310139 is about 1144.6130350472. The cubic root of 1310139 is about 109.4222880148.

The spelling of 1310139 in words is "one million, three hundred ten thousand, one hundred thirty-nine".