20146531307 has 16 divisors (see below), whose sum is σ = 24476409600. Its totient is φ = 16197602400.

The previous prime is 20146531297. The next prime is 20146531337. The reversal of 20146531307 is 70313564102.

It is not a de Polignac number, because 20146531307 - 2¹⁴ = 20146514923 is a prime.

It is a super-2 number, since 2×20146531307² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20146531337) 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, 736457 + ... + 763322.

It is an arithmetic number, because the mean of its divisors is an integer number (1529775600).

Almost surely, 2^20146531307 is an apocalyptic number.

20146531307 is a deficient number, since it is larger than the sum of its proper divisors (4329878293).

20146531307 is a wasteful number, since it uses less digits than its factorization.

20146531307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499906.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 20146531307 in words is "twenty billion, one hundred forty-six million, five hundred thirty-one thousand, three hundred seven".