101131231 has 4 divisors (see below), whose sum is σ = 101751832. Its totient is φ = 100510632.

The previous prime is 101131201. The next prime is 101131237. The reversal of 101131231 is 132131101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101131231 - 2⁹ = 101130719 is a prime.

It is a super-2 number, since 2×101131231² = 20455051767150722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131237) 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, 310056 + ... + 310381.

It is an arithmetic number, because the mean of its divisors is an integer number (25437958).

Almost surely, 2^101131231 is an apocalyptic number.

101131231 is a deficient number, since it is larger than the sum of its proper divisors (620601).

101131231 is an equidigital number, since it uses as much as digits as its factorization.

101131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620600.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 101131231 is about 10056.4024879676. The cubic root of 101131231 is about 465.9025611816.

Adding to 101131231 its reverse (132131101), we get a palindrome (233262332).

The spelling of 101131231 in words is "one hundred one million, one hundred thirty-one thousand, two hundred thirty-one".