31463432 has 64 divisors (see below), whose sum is σ = 79228800. Its totient is φ = 11312640.

The previous prime is 31463429. The next prime is 31463459. The reversal of 31463432 is 23436413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6044 + ... + 9972.

It is an arithmetic number, because the mean of its divisors is an integer number (1237950).

Almost surely, 2^31463432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31463432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39614400).

31463432 is an abundant number, since it is smaller than the sum of its proper divisors (47765368).

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

31463432 is a wasteful number, since it uses less digits than its factorization.

31463432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966 (or 3962 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

The square root of 31463432 is about 5609.2273977795. The cubic root of 31463432 is about 315.6957227004.

Adding to 31463432 its reverse (23436413), we get a palindrome (54899845).

The spelling of 31463432 in words is "thirty-one million, four hundred sixty-three thousand, four hundred thirty-two".