20131450 has 24 divisors (see below), whose sum is σ = 39417120. Its totient is φ = 7628400.

The previous prime is 20131427. The next prime is 20131487. The reversal of 20131450 is 5413102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9646 + ... + 11545.

It is an arithmetic number, because the mean of its divisors is an integer number (1642380).

Almost surely, 2^20131450 is an apocalyptic number.

20131450 is a deficient number, since it is larger than the sum of its proper divisors (19285670).

20131450 is a wasteful number, since it uses less digits than its factorization.

20131450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21222 (or 21217 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20131450 is about 4486.8084425346. The cubic root of 20131450 is about 272.0351472027.

Adding to 20131450 its reverse (5413102), we get a palindrome (25544552).

The spelling of 20131450 in words is "twenty million, one hundred thirty-one thousand, four hundred fifty".