11420215431 has 16 divisors (see below), whose sum is σ = 15605506560. Its totient is φ = 7426523520.

The previous prime is 11420215423. The next prime is 11420215441. The reversal of 11420215431 is 13451202411.

It is not a de Polignac number, because 11420215431 - 2³ = 11420215423 is a prime.

It is a super-2 number, since 2×11420215431² (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 (11420215421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270610 + ... + 309951.

It is an arithmetic number, because the mean of its divisors is an integer number (975344160).

Almost surely, 2^11420215431 is an apocalyptic number.

11420215431 is a deficient number, since it is larger than the sum of its proper divisors (4185291129).

11420215431 is an equidigital number, since it uses as much as digits as its factorization.

11420215431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580726.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 11420215431 its reverse (13451202411), we get a palindrome (24871417842).

The spelling of 11420215431 in words is "eleven billion, four hundred twenty million, two hundred fifteen thousand, four hundred thirty-one".