151831116 has 18 divisors (see below), whose sum is σ = 383795412. Its totient is φ = 50610360.

The previous prime is 151831081. The next prime is 151831117. The reversal of 151831116 is 611138151.

It is a happy number.

151831116 is a `hidden beast` number, since 1 + 518 + 31 + 116 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 151831116.

It is not an unprimeable number, because it can be changed into a prime (151831117) 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, 2108730 + ... + 2108801.

Almost surely, 2^151831116 is an apocalyptic number.

It is an amenable number.

151831116 is an abundant number, since it is smaller than the sum of its proper divisors (231964296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151831116 is a wasteful number, since it uses less digits than its factorization.

151831116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217541 (or 4217536 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 151831116 is about 12321.9769517720. The cubic root of 151831116 is about 533.4826028366.

Adding to 151831116 its reverse (611138151), we get a palindrome (762969267).

The spelling of 151831116 in words is "one hundred fifty-one million, eight hundred thirty-one thousand, one hundred sixteen".