146206531 has 2 divisors, whose sum is σ = 146206532. Its totient is φ = 146206530.

The previous prime is 146206513. The next prime is 146206547. The reversal of 146206531 is 135602641.

Together with previous prime (146206513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 146206531 - 2⁹ = 146206019 is a prime.

It is a super-3 number, since 3×146206531³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 146206531.

It is not a weakly prime, because it can be changed into another prime (146206031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73103265 + 73103266.

It is an arithmetic number, because the mean of its divisors is an integer number (73103266).

Almost surely, 2^146206531 is an apocalyptic number.

146206531 is a deficient number, since it is larger than the sum of its proper divisors (1).

146206531 is an equidigital number, since it uses as much as digits as its factorization.

146206531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 146206531 is about 12091.5892669243. The cubic root of 146206531 is about 526.8119174672.

The spelling of 146206531 in words is "one hundred forty-six million, two hundred six thousand, five hundred thirty-one".