231641402 has 8 divisors (see below), whose sum is σ = 347653236. Its totient is φ = 115756992.

The previous prime is 231641401. The next prime is 231641471. The reversal of 231641402 is 204146132.

It can be written as a sum of positive squares in 2 ways, for example, as 197430601 + 34210801 = 14051^2 + 5849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (231641401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27173 + ... + 34664.

Almost surely, 2^231641402 is an apocalyptic number.

231641402 is a deficient number, since it is larger than the sum of its proper divisors (116011834).

231641402 is a wasteful number, since it uses less digits than its factorization.

231641402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63712.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 231641402 is about 15219.7701033886. The cubic root of 231641402 is about 614.1466137589.

Adding to 231641402 its reverse (204146132), we get a palindrome (435787534).

The spelling of 231641402 in words is "two hundred thirty-one million, six hundred forty-one thousand, four hundred two".