151231145 has 8 divisors (see below), whose sum is σ = 195437256. Its totient is φ = 111678336.

The previous prime is 151231117. The next prime is 151231151. The reversal of 151231145 is 541132151.

It can be written as a sum of positive squares in 4 ways, for example, as 1315609 + 149915536 = 1147^2 + 12244^2 .

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 151231145 - 2⁶ = 151231081 is a prime.

It is a super-2 number, since 2×151231145² = 45741718436022050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151231145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1163252 + ... + 1163381.

It is an arithmetic number, because the mean of its divisors is an integer number (24429657).

Almost surely, 2^151231145 is an apocalyptic number.

It is an amenable number.

151231145 is a deficient number, since it is larger than the sum of its proper divisors (44206111).

151231145 is a wasteful number, since it uses less digits than its factorization.

151231145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326651.

The product of its digits is 600, while the sum is 23.

The square root of 151231145 is about 12297.6072875987. The cubic root of 151231145 is about 532.7789775953.

Adding to 151231145 its reverse (541132151), we get a palindrome (692363296).

The spelling of 151231145 in words is "one hundred fifty-one million, two hundred thirty-one thousand, one hundred forty-five".