149431 has 8 divisors (see below), whose sum is σ = 159840. Its totient is φ = 139392.

The previous prime is 149423. The next prime is 149441. The reversal of 149431 is 134941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149431 - 2³ = 149423 is a prime.

It is a super-2 number, since 2×149431² = 44659247522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1635 + ... + 1723.

It is an arithmetic number, because the mean of its divisors is an integer number (19980).

2¹⁴⁹⁴³¹ is an apocalyptic number.

149431 is a deficient number, since it is larger than the sum of its proper divisors (10409).

149431 is an equidigital number, since it uses as much as digits as its factorization.

149431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185.

The product of its digits is 432, while the sum is 22.

The square root of 149431 is about 386.5630608323. The cubic root of 149431 is about 53.0656596935.

The spelling of 149431 in words is "one hundred forty-nine thousand, four hundred thirty-one".