31799049 has 4 divisors (see below), whose sum is σ = 42398736. Its totient is φ = 21199364.

The previous prime is 31799039. The next prime is 31799057. The reversal of 31799049 is 94099713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94099713 = 3 ⋅31366571.

It is a cyclic number.

It is not a de Polignac number, because 31799049 - 2¹¹ = 31797001 is a prime.

It is a super-2 number, since 2×31799049² = 2022359034608802, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31799049.

It is not an unprimeable number, because it can be changed into a prime (31799029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5299839 + ... + 5299844.

It is an arithmetic number, because the mean of its divisors is an integer number (10599684).

Almost surely, 2^31799049 is an apocalyptic number.

It is an amenable number.

31799049 is a deficient number, since it is larger than the sum of its proper divisors (10599687).

31799049 is a wasteful number, since it uses less digits than its factorization.

31799049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10599686.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 31799049 is about 5639.0645500828. The cubic root of 31799049 is about 316.8142522890.

The spelling of 31799049 in words is "thirty-one million, seven hundred ninety-nine thousand, forty-nine".