149817131 has 8 divisors (see below), whose sum is σ = 150822000. Its totient is φ = 148816000.

The previous prime is 149817127. The next prime is 149817133. The reversal of 149817131 is 131718941.

149817131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 149817131 - 2² = 149817127 is a prime.

It is a super-2 number, since 2×149817131² = 44890345482142322, 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 = 149817091 and 149817100.

It is not an unprimeable number, because it can be changed into a prime (149817133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142295 + ... + 143343.

It is an arithmetic number, because the mean of its divisors is an integer number (18852750).

Almost surely, 2^149817131 is an apocalyptic number.

149817131 is a deficient number, since it is larger than the sum of its proper divisors (1004869).

149817131 is a wasteful number, since it uses less digits than its factorization.

149817131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its digits is 6048, while the sum is 35.

The square root of 149817131 is about 12239.9808414883. The cubic root of 149817131 is about 531.1132775543.

The spelling of 149817131 in words is "one hundred forty-nine million, eight hundred seventeen thousand, one hundred thirty-one".