149000731 has 6 divisors (see below), whose sum is σ = 163777796. Its totient is φ = 135455100.

The previous prime is 149000729. The next prime is 149000743. The reversal of 149000731 is 137000941.

It is not a de Polignac number, because 149000731 - 2¹ = 149000729 is a prime.

It is a super-2 number, since 2×149000731² = 44402435677068722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149000696 and 149000705.

It is not an unprimeable number, because it can be changed into a prime (149000701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 615585 + ... + 615826.

Almost surely, 2^149000731 is an apocalyptic number.

149000731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

149000731 is a deficient number, since it is larger than the sum of its proper divisors (14777065).

149000731 is a wasteful number, since it uses less digits than its factorization.

149000731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231433 (or 1231422 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 149000731 is about 12206.5855586237. The cubic root of 149000731 is about 530.1467862091.

The spelling of 149000731 in words is "one hundred forty-nine million, seven hundred thirty-one", and thus it is an aban number.