229631357 has 2 divisors, whose sum is σ = 229631358. Its totient is φ = 229631356.

The previous prime is 229631329. The next prime is 229631383. The reversal of 229631357 is 753136922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184660921 + 44970436 = 13589^2 + 6706^2 .

It is a cyclic number.

It is not a de Polignac number, because 229631357 - 2⁶ = 229631293 is a prime.

It is a super-2 number, since 2×229631357² = 105461120235322898, 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 229631357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229631327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114815678 + 114815679.

It is an arithmetic number, because the mean of its divisors is an integer number (114815679).

Almost surely, 2^229631357 is an apocalyptic number.

It is an amenable number.

229631357 is a deficient number, since it is larger than the sum of its proper divisors (1).

229631357 is an equidigital number, since it uses as much as digits as its factorization.

229631357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 229631357 is about 15153.5922143893. The cubic root of 229631357 is about 612.3650521526.

The spelling of 229631357 in words is "two hundred twenty-nine million, six hundred thirty-one thousand, three hundred fifty-seven".