215334131 has 2 divisors, whose sum is σ = 215334132. Its totient is φ = 215334130.

The previous prime is 215334113. The next prime is 215334137. The reversal of 215334131 is 131433512.

Together with previous prime (215334113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215334131 - 2²⁶ = 148225267 is a prime.

It is a super-2 number, since 2×215334131² = 92737575947050322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215334097 and 215334106.

It is not a weakly prime, because it can be changed into another prime (215334137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107667065 + 107667066.

It is an arithmetic number, because the mean of its divisors is an integer number (107667066).

Almost surely, 2^215334131 is an apocalyptic number.

215334131 is a deficient number, since it is larger than the sum of its proper divisors (1).

215334131 is an equidigital number, since it uses as much as digits as its factorization.

215334131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 215334131 is about 14674.2676478249. The cubic root of 215334131 is about 599.3828199954.

Adding to 215334131 its reverse (131433512), we get a palindrome (346767643).

The spelling of 215334131 in words is "two hundred fifteen million, three hundred thirty-four thousand, one hundred thirty-one".