2231220232 has 8 divisors (see below), whose sum is σ = 4183537950. Its totient is φ = 1115610112.

The previous prime is 2231220137. The next prime is 2231220247. The reversal of 2231220232 is 2320221322.

It can be written as a sum of positive squares in only one way, i.e., 2003994756 + 227225476 = 44766^2 + 15074^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×2231220232³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139451257 + ... + 139451272.

Almost surely, 2^2231220232 is an apocalyptic number.

It is an amenable number.

2231220232 is a deficient number, since it is larger than the sum of its proper divisors (1952317718).

2231220232 is a wasteful number, since it uses less digits than its factorization.

2231220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278902535 (or 278902531 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2231220232 is about 47235.7939702510. The cubic root of 2231220232 is about 1306.7148093581.

Adding to 2231220232 its reverse (2320221322), we get a palindrome (4551441554).

The spelling of 2231220232 in words is "two billion, two hundred thirty-one million, two hundred twenty thousand, two hundred thirty-two".