49311000 has 96 divisors (see below), whose sum is σ = 166701600. Its totient is φ = 13147200.

The previous prime is 49310971. The next prime is 49311019. The reversal of 49311000 is 11394.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6261 + ... + 11739.

It is an arithmetic number, because the mean of its divisors is an integer number (1736475).

Almost surely, 2^49311000 is an apocalyptic number.

49311000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49311000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83350800).

49311000 is an abundant number, since it is smaller than the sum of its proper divisors (117390600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49311000 is a wasteful number, since it uses less digits than its factorization.

49311000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506 (or 5489 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 49311000 is about 7022.1791489537. The cubic root of 49311000 is about 366.7031185064.

Adding to 49311000 its reverse (11394), we get a palindrome (49322394).

The spelling of 49311000 in words is "forty-nine million, three hundred eleven thousand".