32131000000 has 392 divisors, whose sum is σ = 91438829568. Its totient is φ = 11088000000.

The previous prime is 32130999917. The next prime is 32131000009. The reversal of 32131000000 is 13123.

It is a super-2 number, since 2×32131000000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (32131000009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 252999937 + ... + 253000063.

Almost surely, 2^32131000000 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 32131000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45719414784).

32131000000 is an abundant number, since it is smaller than the sum of its proper divisors (59307829568).

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

32131000000 is an equidigital number, since it uses as much as digits as its factorization.

32131000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 32131000000 its reverse (13123), we get a palindrome (32131013123).

The spelling of 32131000000 in words is "thirty-two billion, one hundred thirty-one million", and thus it is an aban number.