149288731 has 2 divisors, whose sum is σ = 149288732. Its totient is φ = 149288730.

The previous prime is 149288729. The next prime is 149288753. The reversal of 149288731 is 137882941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149288731 - 2¹ = 149288729 is a prime.

It is a super-2 number, since 2×149288731² = 44574250407180722, which contains 22 as substring.

Together with 149288729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (149288701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74644365 + 74644366.

It is an arithmetic number, because the mean of its divisors is an integer number (74644366).

Almost surely, 2^149288731 is an apocalyptic number.

149288731 is a deficient number, since it is larger than the sum of its proper divisors (1).

149288731 is an equidigital number, since it uses as much as digits as its factorization.

149288731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 149288731 is about 12218.3767743510. The cubic root of 149288731 is about 530.4881357826.

The spelling of 149288731 in words is "one hundred forty-nine million, two hundred eighty-eight thousand, seven hundred thirty-one".