215531313119 has 2 divisors, whose sum is σ = 215531313120. Its totient is φ = 215531313118.

The previous prime is 215531313113. The next prime is 215531313131. The reversal of 215531313119 is 911313135512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215531313119 - 2²⁴ = 215514535903 is a prime.

It is a super-2 number, since 2×215531313119² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215531313113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107765656559 + 107765656560.

It is an arithmetic number, because the mean of its divisors is an integer number (107765656560).

Almost surely, 2^215531313119 is an apocalyptic number.

215531313119 is a deficient number, since it is larger than the sum of its proper divisors (1).

215531313119 is an equidigital number, since it uses as much as digits as its factorization.

215531313119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 35.

The spelling of 215531313119 in words is "two hundred fifteen billion, five hundred thirty-one million, three hundred thirteen thousand, one hundred nineteen".