151312222 has 8 divisors (see below), whose sum is σ = 232504272. Its totient is φ = 73810800.

The previous prime is 151312211. The next prime is 151312247. The reversal of 151312222 is 222213151.

151312222 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 self number, because there is not a number n which added to its sum of digits gives 151312222.

It is a congruent number.

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, 922554 + ... + 922717.

It is an arithmetic number, because the mean of its divisors is an integer number (29063034).

Almost surely, 2^151312222 is an apocalyptic number.

151312222 is a deficient number, since it is larger than the sum of its proper divisors (81192050).

151312222 is a wasteful number, since it uses less digits than its factorization.

151312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845314.

The product of its digits is 240, while the sum is 19.

The square root of 151312222 is about 12300.9033001646. The cubic root of 151312222 is about 532.8741705181.

Adding to 151312222 its reverse (222213151), we get a palindrome (373525373).

The spelling of 151312222 in words is "one hundred fifty-one million, three hundred twelve thousand, two hundred twenty-two".