20431240214 has 32 divisors (see below), whose sum is σ = 38988864000. Its totient is φ = 7960220520.

The previous prime is 20431240211. The next prime is 20431240223. The reversal of 20431240214 is 41204213402.

It is a self number, because there is not a number n which added to its sum of digits gives 20431240214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431240211) 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, 1346234 + ... + 1361325.

It is an arithmetic number, because the mean of its divisors is an integer number (1218402000).

Almost surely, 2^20431240214 is an apocalyptic number.

20431240214 is a deficient number, since it is larger than the sum of its proper divisors (18557623786).

20431240214 is a wasteful number, since it uses less digits than its factorization.

20431240214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707593 (or 2707579 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20431240214 its reverse (41204213402), we get a palindrome (61635453616).

The spelling of 20431240214 in words is "twenty billion, four hundred thirty-one million, two hundred forty thousand, two hundred fourteen".