101431231 has 16 divisors (see below), whose sum is σ = 117504000. Its totient is φ = 86532480.

The previous prime is 101431201. The next prime is 101431243. The reversal of 101431231 is 132134101.

It is a cyclic number.

It is not a de Polignac number, because 101431231 - 2⁷ = 101431103 is a prime.

It is a super-2 number, since 2×101431231² = 20576589244350722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101431201) 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, 92770 + ... + 93856.

It is an arithmetic number, because the mean of its divisors is an integer number (7344000).

Almost surely, 2^101431231 is an apocalyptic number.

101431231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101431231 is a deficient number, since it is larger than the sum of its proper divisors (16072769).

101431231 is a wasteful number, since it uses less digits than its factorization.

101431231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 101431231 is about 10071.3073133531. The cubic root of 101431231 is about 466.3627974738.

Adding to 101431231 its reverse (132134101), we get a palindrome (233565332).

The spelling of 101431231 in words is "one hundred one million, four hundred thirty-one thousand, two hundred thirty-one".