20312223294 has 32 divisors (see below), whose sum is σ = 44683856640. Its totient is φ = 6155216760.

The previous prime is 20312223293. The next prime is 20312223301. The reversal of 20312223294 is 49232221302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312223293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1263754 + ... + 1279725.

It is an arithmetic number, because the mean of its divisors is an integer number (1396370520).

Almost surely, 2^20312223294 is an apocalyptic number.

20312223294 is an abundant number, since it is smaller than the sum of its proper divisors (24371633346).

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

20312223294 is a wasteful number, since it uses less digits than its factorization.

20312223294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543517 (or 2543495 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 20312223294 its reverse (49232221302), we get a palindrome (69544444596).

The spelling of 20312223294 in words is "twenty billion, three hundred twelve million, two hundred twenty-three thousand, two hundred ninety-four".