11420431023 has 12 divisors (see below), whose sum is σ = 16070857368. Its totient is φ = 7212903120.

The previous prime is 11420431019. The next prime is 11420431049. The reversal of 11420431023 is 32013402411.

It is not a de Polignac number, because 11420431023 - 2² = 11420431019 is a prime.

It is a super-2 number, since 2×11420431023² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420431123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5271508 + ... + 5273673.

It is an arithmetic number, because the mean of its divisors is an integer number (1339238114).

Almost surely, 2^11420431023 is an apocalyptic number.

11420431023 is a deficient number, since it is larger than the sum of its proper divisors (4650426345).

11420431023 is a wasteful number, since it uses less digits than its factorization.

11420431023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10545222 (or 10545203 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 11420431023 its reverse (32013402411), we get a palindrome (43433833434).

The spelling of 11420431023 in words is "eleven billion, four hundred twenty million, four hundred thirty-one thousand, twenty-three".