49981031 has 4 divisors (see below), whose sum is σ = 50072952. Its totient is φ = 49889112.

The previous prime is 49980991. The next prime is 49981079. The reversal of 49981031 is 13018994.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49981031 is a prime.

It is a super-2 number, since 2×49981031² = 4996206919645922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49980982 and 49981000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49981081) 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, 45140 + ... + 46233.

It is an arithmetic number, because the mean of its divisors is an integer number (12518238).

Almost surely, 2^49981031 is an apocalyptic number.

49981031 is a deficient number, since it is larger than the sum of its proper divisors (91921).

49981031 is an equidigital number, since it uses as much as digits as its factorization.

49981031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91920.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 49981031 is about 7069.7263737715. The cubic root of 49981031 is about 368.3565557089.

The spelling of 49981031 in words is "forty-nine million, nine hundred eighty-one thousand, thirty-one".