20412431263 has 4 divisors (see below), whose sum is σ = 23328492880. Its totient is φ = 17496369648.

The previous prime is 20412431243. The next prime is 20412431279. The reversal of 20412431263 is 36213421402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36213421402 = 2 ⋅18106710701.

It is a cyclic number.

It is not a de Polignac number, because 20412431263 - 2²⁵ = 20378876831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412431243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458030798 + ... + 1458030811.

It is an arithmetic number, because the mean of its divisors is an integer number (5832123220).

Almost surely, 2^20412431263 is an apocalyptic number.

20412431263 is a deficient number, since it is larger than the sum of its proper divisors (2916061617).

20412431263 is an equidigital number, since it uses as much as digits as its factorization.

20412431263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916061616.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20412431263 its reverse (36213421402), we get a palindrome (56625852665).

The spelling of 20412431263 in words is "twenty billion, four hundred twelve million, four hundred thirty-one thousand, two hundred sixty-three".