20003012431 has 32 divisors (see below), whose sum is σ = 21021235200. Its totient is φ = 19022515200.

The previous prime is 20003012389. The next prime is 20003012501. The reversal of 20003012431 is 13421030002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20003012431 - 2¹³ = 20003004239 is a prime.

It is a super-2 number, since 2×20003012431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003013431) 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 31 ways as a sum of consecutive naturals, for example, 68269521 + ... + 68269813.

It is an arithmetic number, because the mean of its divisors is an integer number (656913600).

Almost surely, 2^20003012431 is an apocalyptic number.

20003012431 is a deficient number, since it is larger than the sum of its proper divisors (1018222769).

20003012431 is a wasteful number, since it uses less digits than its factorization.

20003012431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20003012431 its reverse (13421030002), we get a palindrome (33424042433).

The spelling of 20003012431 in words is "twenty billion, three million, twelve thousand, four hundred thirty-one".