2231695145 has 32 divisors (see below), whose sum is σ = 3012746400. Its totient is φ = 1578479616.

The previous prime is 2231695133. The next prime is 2231695163. The reversal of 2231695145 is 5415961322.

It can be written as a sum of positive squares in 16 ways, for example, as 162537001 + 2069158144 = 12749^2 + 45488^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231695145 - 2¹⁰ = 2231694121 is a prime.

It is a super-3 number, since 3×2231695145³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2231695099 and 2231695108.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78971 + ... + 103439.

It is an arithmetic number, because the mean of its divisors is an integer number (94148325).

Almost surely, 2^2231695145 is an apocalyptic number.

It is an amenable number.

2231695145 is a deficient number, since it is larger than the sum of its proper divisors (781051255).

2231695145 is a wasteful number, since it uses less digits than its factorization.

2231695145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24557.

The product of its digits is 64800, while the sum is 38.

The square root of 2231695145 is about 47240.8207485856. The cubic root of 2231695145 is about 1306.8075137622.

The spelling of 2231695145 in words is "two billion, two hundred thirty-one million, six hundred ninety-five thousand, one hundred forty-five".