149031812 has 48 divisors (see below), whose sum is σ = 285344640. Its totient is φ = 67888128.

The previous prime is 149031797. The next prime is 149031821. The reversal of 149031812 is 218130941.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221108 + ... + 221780.

It is an arithmetic number, because the mean of its divisors is an integer number (5944680).

Almost surely, 2^149031812 is an apocalyptic number.

It is an amenable number.

149031812 is a deficient number, since it is larger than the sum of its proper divisors (136312828).

149031812 is a wasteful number, since it uses less digits than its factorization.

With its successor (149031813) it forms an eRAP, since the sums of their prime factors are consecutive (812 and 813).

149031812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 149031812 is about 12207.8586164814. The cubic root of 149031812 is about 530.1836458642.

The spelling of 149031812 in words is "one hundred forty-nine million, thirty-one thousand, eight hundred twelve".