45331431320 has 128 divisors (see below), whose sum is σ = 117681984000. Its totient is φ = 15394016256.

The previous prime is 45331431307. The next prime is 45331431329. The reversal of 45331431320 is 2313413354.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45331431329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21595631 + ... + 21597729.

It is an arithmetic number, because the mean of its divisors is an integer number (919390500).

Almost surely, 2^45331431320 is an apocalyptic number.

45331431320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45331431320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58840992000).

45331431320 is an abundant number, since it is smaller than the sum of its proper divisors (72350552680).

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

45331431320 is a wasteful number, since it uses less digits than its factorization.

45331431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 45331431320 its reverse (2313413354), we get a palindrome (47644844674).

The spelling of 45331431320 in words is "forty-five billion, three hundred thirty-one million, four hundred thirty-one thousand, three hundred twenty".