20313231000 has 64 divisors (see below), whose sum is σ = 63377290080. Its totient is φ = 5416860800.

The previous prime is 20313230969. The next prime is 20313231073. The reversal of 20313231000 is 13231302.

It is a super-2 number, since 2×20313231000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3382539 + ... + 3388538.

Almost surely, 2^20313231000 is an apocalyptic number.

20313231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313231000 is an abundant number, since it is smaller than the sum of its proper divisors (43064059080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313231000 is a wasteful number, since it uses less digits than its factorization.

20313231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771101 (or 6771087 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20313231000 its reverse (13231302), we get a palindrome (20326462302).

The spelling of 20313231000 in words is "twenty billion, three hundred thirteen million, two hundred thirty-one thousand".