20131350 has 48 divisors (see below), whose sum is σ = 50449152. Its totient is φ = 5312160.

The previous prime is 20131339. The next prime is 20131373. The reversal of 20131350 is 5313102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 14799 + ... + 16101.

It is an arithmetic number, because the mean of its divisors is an integer number (1051024).

Almost surely, 2^20131350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20131350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25224576).

20131350 is an abundant number, since it is smaller than the sum of its proper divisors (30317802).

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

20131350 is a wasteful number, since it uses less digits than its factorization.

20131350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20131350 is about 4486.7972987422. The cubic root of 20131350 is about 272.0346967705.

Adding to 20131350 its reverse (5313102), we get a palindrome (25444452).

The spelling of 20131350 in words is "twenty million, one hundred thirty-one thousand, three hundred fifty".