15231401 has 2 divisors, whose sum is σ = 15231402. Its totient is φ = 15231400.

The previous prime is 15231397. The next prime is 15231421. The reversal of 15231401 is 10413251.

15231401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14707225 + 524176 = 3835^2 + 724^2 .

It is an emirp because it is prime and its reverse (10413251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15231401 - 2² = 15231397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15231401.

It is not a weakly prime, because it can be changed into another prime (15231421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7615700 + 7615701.

It is an arithmetic number, because the mean of its divisors is an integer number (7615701).

Almost surely, 2^15231401 is an apocalyptic number.

It is an amenable number.

15231401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15231401 is an equidigital number, since it uses as much as digits as its factorization.

15231401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 15231401 is about 3902.7427535004. The cubic root of 15231401 is about 247.8829279637.

Adding to 15231401 its reverse (10413251), we get a palindrome (25644652).

The spelling of 15231401 in words is "fifteen million, two hundred thirty-one thousand, four hundred one".