15011231 has 2 divisors, whose sum is σ = 15011232. Its totient is φ = 15011230.

The previous prime is 15011219. The next prime is 15011237. The reversal of 15011231 is 13211051.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15011231 - 2¹⁰ = 15010207 is a prime.

It is a super-2 number, since 2×15011231² = 450674112270722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15011237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7505615 + 7505616.

It is an arithmetic number, because the mean of its divisors is an integer number (7505616).

Almost surely, 2^15011231 is an apocalyptic number.

15011231 is a deficient number, since it is larger than the sum of its proper divisors (1).

15011231 is an equidigital number, since it uses as much as digits as its factorization.

15011231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 15011231 is about 3874.4329907743. The cubic root of 15011231 is about 246.6827432505.

Adding to 15011231 its reverse (13211051), we get a palindrome (28222282).

The spelling of 15011231 in words is "fifteen million, eleven thousand, two hundred thirty-one".