2231001545 has 16 divisors (see below), whose sum is σ = 2873523600. Its totient is φ = 1656797184.

The previous prime is 2231001517. The next prime is 2231001559. The reversal of 2231001545 is 5451001322.

It can be written as a sum of positive squares in 8 ways, for example, as 226111369 + 2004890176 = 15037^2 + 44776^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231001545 - 2⁶ = 2231001481 is a prime.

It is a super-3 number, since 3×2231001545³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231001545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173570 + ... + 185979.

It is an arithmetic number, because the mean of its divisors is an integer number (179595225).

Almost surely, 2^2231001545 is an apocalyptic number.

It is an amenable number.

2231001545 is a deficient number, since it is larger than the sum of its proper divisors (642522055).

2231001545 is a wasteful number, since it uses less digits than its factorization.

2231001545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359644.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2231001545 is about 47233.4790694058. The cubic root of 2231001545 is about 1306.6721165939.

Adding to 2231001545 its reverse (5451001322), we get a palindrome (7682002867).

The spelling of 2231001545 in words is "two billion, two hundred thirty-one million, one thousand, five hundred forty-five".