101431 has 4 divisors (see below), whose sum is σ = 110664. Its totient is φ = 92200.

The previous prime is 101429. The next prime is 101449. The reversal of 101431 is 134101.

It is a happy number.

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 101431 - 2¹ = 101429 is a prime.

It is a super-2 number, since 2×101431² = 20576495522, which contains 22 as substring.

It is a Duffinian number.

101431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101411) 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, 4600 + ... + 4621.

It is an arithmetic number, because the mean of its divisors is an integer number (27666).

2¹⁰¹⁴³¹ is an apocalyptic number.

101431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101431 is a deficient number, since it is larger than the sum of its proper divisors (9233).

101431 is an equidigital number, since it uses as much as digits as its factorization.

101431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9232.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 101431 is about 318.4823385998. The cubic root of 101431 is about 46.6362443441.

Adding to 101431 its reverse (134101), we get a palindrome (235532).

It can be divided in two parts, 10 and 1431, that added together give a palindrome (1441).

The spelling of 101431 in words is "one hundred one thousand, four hundred thirty-one".