31234250000 has 140 divisors (see below), whose sum is σ = 76455193236. Its totient is φ = 12360000000.

The previous prime is 31234249999. The next prime is 31234250023. The reversal of 31234250000 is 5243213.

It is a happy number.

It can be written as a sum of positive squares in 14 ways, for example, as 31234199824 + 50176 = 176732^2 + 224^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 25249382 + ... + 25250618.

Almost surely, 2^31234250000 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 31234250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38227596618).

31234250000 is an abundant number, since it is smaller than the sum of its proper divisors (45220943236).

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

31234250000 is an equidigital number, since it uses as much as digits as its factorization.

31234250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 31234250000 its reverse (5243213), we get a palindrome (31239493213).

The spelling of 31234250000 in words is "thirty-one billion, two hundred thirty-four million, two hundred fifty thousand".