133723916 has 12 divisors (see below), whose sum is σ = 234250632. Its totient is φ = 66795168.

The previous prime is 133723907. The next prime is 133723927. The reversal of 133723916 is 619327331.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12050 + ... + 20313.

It is an arithmetic number, because the mean of its divisors is an integer number (19520886).

Almost surely, 2^133723916 is an apocalyptic number.

It is an amenable number.

133723916 is a deficient number, since it is larger than the sum of its proper divisors (100526716).

133723916 is a wasteful number, since it uses less digits than its factorization.

133723916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33400 (or 33398 counting only the distinct ones).

The product of its digits is 20412, while the sum is 35.

The square root of 133723916 is about 11563.9057415736. The cubic root of 133723916 is about 511.3713139221.

The spelling of 133723916 in words is "one hundred thirty-three million, seven hundred twenty-three thousand, nine hundred sixteen".