10031220399 has 4 divisors (see below), whose sum is σ = 13374960536. Its totient is φ = 6687480264.

The previous prime is 10031220383. The next prime is 10031220421. The reversal of 10031220399 is 99302213001.

It is a happy number.

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

It is not a de Polignac number, because 10031220399 - 2⁴ = 10031220383 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 (10031220319) 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, 1671870064 + ... + 1671870069.

It is an arithmetic number, because the mean of its divisors is an integer number (3343740134).

Almost surely, 2^10031220399 is an apocalyptic number.

10031220399 is a deficient number, since it is larger than the sum of its proper divisors (3343740137).

10031220399 is an equidigital number, since it uses as much as digits as its factorization.

10031220399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343740136.

The product of its (nonzero) digits is 2916, while the sum is 30.

The spelling of 10031220399 in words is "ten billion, thirty-one million, two hundred twenty thousand, three hundred ninety-nine".