1310499021 has 16 divisors (see below), whose sum is σ = 1884177344. Its totient is φ = 805417344.

The previous prime is 1310499019. The next prime is 1310499023. The reversal of 1310499021 is 1209940131.

It is an interprime number because it is at equal distance from previous prime (1310499019) and next prime (1310499023).

It is not a de Polignac number, because 1310499021 - 2¹ = 1310499019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1310499021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310499023) 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, 9345 + ... + 52041.

It is an arithmetic number, because the mean of its divisors is an integer number (117761084).

Almost surely, 2^1310499021 is an apocalyptic number.

It is an amenable number.

1310499021 is a deficient number, since it is larger than the sum of its proper divisors (573678323).

1310499021 is a wasteful number, since it uses less digits than its factorization.

1310499021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43500.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1310499021 is about 36200.8151980035. The cubic root of 1310499021 is about 1094.3231003373.

The spelling of 1310499021 in words is "one billion, three hundred ten million, four hundred ninety-nine thousand, twenty-one".