151311121 has 8 divisors (see below), whose sum is σ = 163160424. Its totient is φ = 139491840.

The previous prime is 151311119. The next prime is 151311143. The reversal of 151311121 is 121113151.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27300625 + 124010496 = 5225^2 + 11136^2 .

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 151311121 - 2¹ = 151311119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151311095 and 151311104.

It is not an unprimeable number, because it can be changed into a prime (151311151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3585 + ... + 17761.

It is an arithmetic number, because the mean of its divisors is an integer number (20395053).

Almost surely, 2^151311121 is an apocalyptic number.

It is an amenable number.

151311121 is a deficient number, since it is larger than the sum of its proper divisors (11849303).

151311121 is a wasteful number, since it uses less digits than its factorization.

151311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15011.

The product of its digits is 30, while the sum is 16.

The square root of 151311121 is about 12300.8585472722. The cubic root of 151311121 is about 532.8728780561.

Adding to 151311121 its reverse (121113151), we get a palindrome (272424272).

The spelling of 151311121 in words is "one hundred fifty-one million, three hundred eleven thousand, one hundred twenty-one".