1310030021 has 8 divisors (see below), whose sum is σ = 1414126080. Its totient is φ = 1209862192.

The previous prime is 1310030011. The next prime is 1310030027. The reversal of 1310030021 is 1200300131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1310030021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310029984 and 1310030011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310030027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981365 + ... + 982698.

It is an arithmetic number, because the mean of its divisors is an integer number (176765760).

Almost surely, 2^1310030021 is an apocalyptic number.

It is an amenable number.

1310030021 is a deficient number, since it is larger than the sum of its proper divisors (104096059).

1310030021 is a wasteful number, since it uses less digits than its factorization.

1310030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964115.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1310030021 is about 36194.3368636587. The cubic root of 1310030021 is about 1094.1925396975.

Adding to 1310030021 its reverse (1200300131), we get a palindrome (2510330152).

The spelling of 1310030021 in words is "one billion, three hundred ten million, thirty thousand, twenty-one".