149706431 has 8 divisors (see below), whose sum is σ = 171239040. Its totient is φ = 128210328.

The previous prime is 149706419. The next prime is 149706443. The reversal of 149706431 is 134607941.

It is an interprime number because it is at equal distance from previous prime (149706419) and next prime (149706443).

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 149706431 - 2¹⁸ = 149444287 is a prime.

It is a super-2 number, since 2×149706431² = 44824030965515522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 149706391 and 149706400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149706451) 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 in 7 ways as a sum of consecutive naturals, for example, 320 + ... + 17306.

It is an arithmetic number, because the mean of its divisors is an integer number (21404880).

Almost surely, 2^149706431 is an apocalyptic number.

149706431 is a deficient number, since it is larger than the sum of its proper divisors (21532609).

149706431 is a wasteful number, since it uses less digits than its factorization.

149706431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18253.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 149706431 is about 12235.4579399383. The cubic root of 149706431 is about 530.9824319774.

The spelling of 149706431 in words is "one hundred forty-nine million, seven hundred six thousand, four hundred thirty-one".