151216531 has 8 divisors (see below), whose sum is σ = 154615104. Its totient is φ = 147825600.

The previous prime is 151216529. The next prime is 151216553. The reversal of 151216531 is 135612151.

It is a happy number.

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 151216531 - 2¹ = 151216529 is a prime.

It is a super-2 number, since 2×151216531² = 45732878495347922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151216496 and 151216505.

It is not an unprimeable number, because it can be changed into a prime (151216931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59911 + ... + 62383.

It is an arithmetic number, because the mean of its divisors is an integer number (19326888).

Almost surely, 2^151216531 is an apocalyptic number.

151216531 is a deficient number, since it is larger than the sum of its proper divisors (3398573).

151216531 is a wasteful number, since it uses less digits than its factorization.

151216531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821.

The product of its digits is 900, while the sum is 25.

The square root of 151216531 is about 12297.0130926172. The cubic root of 151216531 is about 532.7618156040.

Adding to 151216531 its reverse (135612151), we get a palindrome (286828682).

The spelling of 151216531 in words is "one hundred fifty-one million, two hundred sixteen thousand, five hundred thirty-one".