84148531 has 2 divisors, whose sum is σ = 84148532. Its totient is φ = 84148530.

The previous prime is 84148507. The next prime is 84148553. The reversal of 84148531 is 13584148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84148531 - 2¹¹ = 84146483 is a prime.

It is a super-2 number, since 2×84148531² = 14161950538915922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84148231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42074265 + 42074266.

It is an arithmetic number, because the mean of its divisors is an integer number (42074266).

Almost surely, 2^84148531 is an apocalyptic number.

84148531 is a deficient number, since it is larger than the sum of its proper divisors (1).

84148531 is an equidigital number, since it uses as much as digits as its factorization.

84148531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 34.

The square root of 84148531 is about 9173.2508414411. The cubic root of 84148531 is about 438.2098946739.

The spelling of 84148531 in words is "eighty-four million, one hundred forty-eight thousand, five hundred thirty-one".