11151431 has 2 divisors, whose sum is σ = 11151432. Its totient is φ = 11151430.

The previous prime is 11151421. The next prime is 11151443. The reversal of 11151431 is 13415111.

It is a weak prime.

It is an emirp because it is prime and its reverse (13415111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11151431 - 2¹⁰ = 11150407 is a prime.

It is a super-2 number, since 2×11151431² = 248708826695522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11151401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5575715 + 5575716.

It is an arithmetic number, because the mean of its divisors is an integer number (5575716).

Almost surely, 2^11151431 is an apocalyptic number.

11151431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11151431 is an equidigital number, since it uses as much as digits as its factorization.

11151431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 17.

The square root of 11151431 is about 3339.3758398839. The cubic root of 11151431 is about 223.4139054845.

Adding to 11151431 its reverse (13415111), we get a palindrome (24566542).

The spelling of 11151431 in words is "eleven million, one hundred fifty-one thousand, four hundred thirty-one".