2231571655 has 8 divisors (see below), whose sum is σ = 2681428032. Its totient is φ = 1782895968.

The previous prime is 2231571653. The next prime is 2231571689. The reversal of 2231571655 is 5561751322.

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 2231571655 - 2¹ = 2231571653 is a prime.

It is a super-3 number, since 3×2231571655³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231571653) 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, 291007 + ... + 298576.

It is an arithmetic number, because the mean of its divisors is an integer number (335178504).

Almost surely, 2^2231571655 is an apocalyptic number.

2231571655 is a deficient number, since it is larger than the sum of its proper divisors (449856377).

2231571655 is an equidigital number, since it uses as much as digits as its factorization.

2231571655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590345.

The product of its digits is 63000, while the sum is 37.

The square root of 2231571655 is about 47239.5137041016. The cubic root of 2231571655 is about 1306.7834094191.

The spelling of 2231571655 in words is "two billion, two hundred thirty-one million, five hundred seventy-one thousand, six hundred fifty-five".