20311232294 has 32 divisors (see below), whose sum is σ = 32841974880. Its totient is φ = 9391479552.

The previous prime is 20311232267. The next prime is 20311232297. The reversal of 20311232294 is 49223211302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311232297) 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, 371162 + ... + 422354.

It is an arithmetic number, because the mean of its divisors is an integer number (1026311715).

Almost surely, 2^20311232294 is an apocalyptic number.

20311232294 is a deficient number, since it is larger than the sum of its proper divisors (12530742586).

20311232294 is a wasteful number, since it uses less digits than its factorization.

20311232294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51464.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 20311232294 its reverse (49223211302), we get a palindrome (69534443596).

The spelling of 20311232294 in words is "twenty billion, three hundred eleven million, two hundred thirty-two thousand, two hundred ninety-four".