228583731 has 16 divisors (see below), whose sum is σ = 307792800. Its totient is φ = 150888960.

The previous prime is 228583723. The next prime is 228583741. The reversal of 228583731 is 137385822.

It is not a de Polignac number, because 228583731 - 2³ = 228583723 is a prime.

It is a super-2 number, since 2×228583731² = 104501044155760722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228583731.

It is not an unprimeable number, because it can be changed into a prime (228583741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192961 + ... + 194141.

It is an arithmetic number, because the mean of its divisors is an integer number (19237050).

Almost surely, 2^228583731 is an apocalyptic number.

228583731 is a deficient number, since it is larger than the sum of its proper divisors (79209069).

228583731 is a wasteful number, since it uses less digits than its factorization.

228583731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766.

The product of its digits is 80640, while the sum is 39.

The square root of 228583731 is about 15118.9857794761. The cubic root of 228583731 is about 611.4323868061.

The spelling of 228583731 in words is "two hundred twenty-eight million, five hundred eighty-three thousand, seven hundred thirty-one".