20061501231 has 16 divisors (see below), whose sum is σ = 27621367808. Its totient is φ = 12938292000.

The previous prime is 20061501227. The next prime is 20061501277. The reversal of 20061501231 is 13210516002.

It is not a de Polignac number, because 20061501231 - 2² = 20061501227 is a prime.

It is a super-2 number, since 2×20061501231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20061501198 and 20061501207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061509231) 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 15 ways as a sum of consecutive naturals, for example, 234306 + ... + 308256.

It is an arithmetic number, because the mean of its divisors is an integer number (1726335488).

Almost surely, 2^20061501231 is an apocalyptic number.

20061501231 is a deficient number, since it is larger than the sum of its proper divisors (7559866577).

20061501231 is a wasteful number, since it uses less digits than its factorization.

20061501231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76902.

The product of its (nonzero) digits is 360, while the sum is 21.

The spelling of 20061501231 in words is "twenty billion, sixty-one million, five hundred one thousand, two hundred thirty-one".