20371240207 has 8 divisors (see below), whose sum is σ = 20622931056. Its totient is φ = 20119698432.

The previous prime is 20371240061. The next prime is 20371240213. The reversal of 20371240207 is 70204217302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20371240207 - 2²³ = 20362851599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20371240237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251433 + ... + 322429.

It is an arithmetic number, because the mean of its divisors is an integer number (2577866382).

Almost surely, 2^20371240207 is an apocalyptic number.

20371240207 is a deficient number, since it is larger than the sum of its proper divisors (251690849).

20371240207 is an equidigital number, since it uses as much as digits as its factorization.

20371240207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74537.

The product of its (nonzero) digits is 4704, while the sum is 28.

Adding to 20371240207 its reverse (70204217302), we get a palindrome (90575457509).

The spelling of 20371240207 in words is "twenty billion, three hundred seventy-one million, two hundred forty thousand, two hundred seven".