20431032 has 16 divisors (see below), whose sum is σ = 51077640. Its totient is φ = 6810336.

The previous prime is 20431027. The next prime is 20431039. The reversal of 20431032 is 23013402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431039) 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, 425623 + ... + 425670.

Almost surely, 2^20431032 is an apocalyptic number.

It is an amenable number.

20431032 is an abundant number, since it is smaller than the sum of its proper divisors (30646608).

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

20431032 is a wasteful number, since it uses less digits than its factorization.

20431032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851302 (or 851298 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20431032 is about 4520.0699109638. The cubic root of 20431032 is about 273.3779198863.

Adding to 20431032 its reverse (23013402), we get a palindrome (43444434).

The spelling of 20431032 in words is "twenty million, four hundred thirty-one thousand, thirty-two".