199031013 has 20 divisors (see below), whose sum is σ = 302364480. Its totient is φ = 130435272.

The previous prime is 199031011. The next prime is 199031017. The reversal of 199031013 is 310130991.

It is not a de Polignac number, because 199031013 - 2¹ = 199031011 is a prime.

It is a super-2 number, since 2×199031013² = 79226688271612338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199031011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16045 + ... + 25602.

It is an arithmetic number, because the mean of its divisors is an integer number (15118224).

Almost surely, 2^199031013 is an apocalyptic number.

It is an amenable number.

199031013 is a deficient number, since it is larger than the sum of its proper divisors (103333467).

199031013 is an equidigital number, since it uses as much as digits as its factorization.

199031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41718 (or 41709 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 199031013 is about 14107.8351634827. The cubic root of 199031013 is about 583.8575732068.

The spelling of 199031013 in words is "one hundred ninety-nine million, thirty-one thousand, thirteen".