149269531 has 2 divisors, whose sum is σ = 149269532. Its totient is φ = 149269530.

The previous prime is 149269513. The next prime is 149269559. The reversal of 149269531 is 135962941.

149269531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (149269513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149269531 - 2⁵ = 149269499 is a prime.

It is a super-2 number, since 2×149269531² = 44562785769919922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149269331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74634765 + 74634766.

It is an arithmetic number, because the mean of its divisors is an integer number (74634766).

Almost surely, 2^149269531 is an apocalyptic number.

149269531 is a deficient number, since it is larger than the sum of its proper divisors (1).

149269531 is an equidigital number, since it uses as much as digits as its factorization.

149269531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 149269531 is about 12217.5910473383. The cubic root of 149269531 is about 530.4653928093.

The spelling of 149269531 in words is "one hundred forty-nine million, two hundred sixty-nine thousand, five hundred thirty-one".