31045050 has 72 divisors (see below), whose sum is σ = 87821760. Its totient is φ = 7840800.

The previous prime is 31045039. The next prime is 31045067. The reversal of 31045050 is 5054013.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6735 + ... + 10365.

Almost surely, 2^31045050 is an apocalyptic number.

31045050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31045050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43910880).

31045050 is an abundant number, since it is smaller than the sum of its proper divisors (56776710).

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

31045050 is a wasteful number, since it uses less digits than its factorization.

31045050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668 (or 3660 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 31045050 is about 5571.8085035292. The cubic root of 31045050 is about 314.2901627666.

Adding to 31045050 its reverse (5054013), we get a palindrome (36099063).

The spelling of 31045050 in words is "thirty-one million, forty-five thousand, fifty".