2215400231 has 8 divisors (see below), whose sum is σ = 2417290128. Its totient is φ = 2013592000.

The previous prime is 2215400207. The next prime is 2215400233. The reversal of 2215400231 is 1320045122.

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 2215400231 - 2¹⁴ = 2215383847 is a prime.

It is a super-2 number, since 2×2215400231² = 9815996367029706722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215400233) 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, 45611 + ... + 80691.

It is an arithmetic number, because the mean of its divisors is an integer number (302161266).

Almost surely, 2^2215400231 is an apocalyptic number.

2215400231 is a deficient number, since it is larger than the sum of its proper divisors (201889897).

2215400231 is a wasteful number, since it uses less digits than its factorization.

2215400231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40833.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2215400231 is about 47068.0383168876. The cubic root of 2215400231 is about 1303.6191519484.

Adding to 2215400231 its reverse (1320045122), we get a palindrome (3535445353).

The spelling of 2215400231 in words is "two billion, two hundred fifteen million, four hundred thousand, two hundred thirty-one".