11211032431 has 2 divisors, whose sum is σ = 11211032432. Its totient is φ = 11211032430.

The previous prime is 11211032429. The next prime is 11211032467. The reversal of 11211032431 is 13423011211.

It is a weak prime.

It is an emirp because it is prime and its reverse (13423011211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11211032431 - 2¹ = 11211032429 is a prime.

It is a super-2 number, since 2×11211032431² (a number of 21 digits) contains 22 as substring.

Together with 11211032429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11211032399 and 11211032408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211032411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605516215 + 5605516216.

It is an arithmetic number, because the mean of its divisors is an integer number (5605516216).

Almost surely, 2^11211032431 is an apocalyptic number.

11211032431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211032431 is an equidigital number, since it uses as much as digits as its factorization.

11211032431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11211032431 its reverse (13423011211), we get a palindrome (24634043642).

The spelling of 11211032431 in words is "eleven billion, two hundred eleven million, thirty-two thousand, four hundred thirty-one".