49831013 has 4 divisors (see below), whose sum is σ = 49846560. Its totient is φ = 49815468.

The previous prime is 49831007. The next prime is 49831021. The reversal of 49831013 is 31013894.

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: 31013894 = 2 ⋅15506947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49831013 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 (49831003) 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, 995 + ... + 10032.

It is an arithmetic number, because the mean of its divisors is an integer number (12461640).

Almost surely, 2^49831013 is an apocalyptic number.

It is an amenable number.

49831013 is a deficient number, since it is larger than the sum of its proper divisors (15547).

49831013 is a wasteful number, since it uses less digits than its factorization.

49831013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15546.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 49831013 is about 7059.1085131198. The cubic root of 49831013 is about 367.9876457927.

The spelling of 49831013 in words is "forty-nine million, eight hundred thirty-one thousand, thirteen".