15146231 has 2 divisors, whose sum is σ = 15146232. Its totient is φ = 15146230.

The previous prime is 15146227. The next prime is 15146237. The reversal of 15146231 is 13264151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15146231 - 2² = 15146227 is a prime.

It is a super-3 number, since 3×15146231³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15146197 and 15146206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15146237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7573115 + 7573116.

It is an arithmetic number, because the mean of its divisors is an integer number (7573116).

Almost surely, 2^15146231 is an apocalyptic number.

15146231 is a deficient number, since it is larger than the sum of its proper divisors (1).

15146231 is an equidigital number, since it uses as much as digits as its factorization.

15146231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 15146231 is about 3891.8159000652. The cubic root of 15146231 is about 247.4200319821.

It can be divided in two parts, 15 and 146231, that multiplied together give a triangular number (2193465 = T₂₀₉₄).

The spelling of 15146231 in words is "fifteen million, one hundred forty-six thousand, two hundred thirty-one".