31142534250 has 128 divisors (see below), whose sum is σ = 82007976960. Its totient is φ = 7849800000.

The previous prime is 31142534219. The next prime is 31142534273. The reversal of 31142534250 is 5243524113.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6994525 + ... + 6998975.

It is an arithmetic number, because the mean of its divisors is an integer number (640687320).

Almost surely, 2^31142534250 is an apocalyptic number.

31142534250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31142534250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41003988480).

31142534250 is an abundant number, since it is smaller than the sum of its proper divisors (50865442710).

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

31142534250 is a wasteful number, since it uses less digits than its factorization.

31142534250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981 (or 4971 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 31142534250 in words is "thirty-one billion, one hundred forty-two million, five hundred thirty-four thousand, two hundred fifty".