228761513 has 2 divisors, whose sum is σ = 228761514. Its totient is φ = 228761512.

The previous prime is 228761453. The next prime is 228761521. The reversal of 228761513 is 315167822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151462249 + 77299264 = 12307^2 + 8792^2 .

It is a cyclic number.

It is not a de Polignac number, because 228761513 - 2¹⁴ = 228745129 is a prime.

It is not a weakly prime, because it can be changed into another prime (228761563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114380756 + 114380757.

It is an arithmetic number, because the mean of its divisors is an integer number (114380757).

Almost surely, 2^228761513 is an apocalyptic number.

It is an amenable number.

228761513 is a deficient number, since it is larger than the sum of its proper divisors (1).

228761513 is an equidigital number, since it uses as much as digits as its factorization.

228761513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 228761513 is about 15124.8640655049. The cubic root of 228761513 is about 611.5908604694.

It can be divided in two parts, 22876 and 1513, that added together give a cube (24389 = 29³).

The spelling of 228761513 in words is "two hundred twenty-eight million, seven hundred sixty-one thousand, five hundred thirteen".