10131231 has 16 divisors (see below), whose sum is σ = 14796288. Its totient is φ = 6115200.

The previous prime is 10131227. The next prime is 10131257. The reversal of 10131231 is 13213101.

It is not a de Polignac number, because 10131231 - 2² = 10131227 is a prime.

It is a super-2 number, since 2×10131231² = 205283683150722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131211) 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, 10666 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (924768).

Almost surely, 2^10131231 is an apocalyptic number.

10131231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10131231 is a deficient number, since it is larger than the sum of its proper divisors (4665057).

10131231 is a wasteful number, since it uses less digits than its factorization.

10131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 10131231 is about 3182.9594719380. The cubic root of 10131231 is about 216.3818049990.

Adding to 10131231 its reverse (13213101), we get a palindrome (23344332).

The spelling of 10131231 in words is "ten million, one hundred thirty-one thousand, two hundred thirty-one".