20312342250 has 32 divisors (see below), whose sum is σ = 50699608128. Its totient is φ = 5416624400.

The previous prime is 20312342249. The next prime is 20312342261. The reversal of 20312342250 is 5224321302.

It is a super-2 number, since 2×20312342250² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20312342250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13540812 + ... + 13542311.

It is an arithmetic number, because the mean of its divisors is an integer number (1584362754).

Almost surely, 2^20312342250 is an apocalyptic number.

20312342250 is an abundant number, since it is smaller than the sum of its proper divisors (30387265878).

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

20312342250 is a wasteful number, since it uses less digits than its factorization.

20312342250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27083143 (or 27083133 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20312342250 its reverse (5224321302), we get a palindrome (25536663552).

The spelling of 20312342250 in words is "twenty billion, three hundred twelve million, three hundred forty-two thousand, two hundred fifty".