2101431 has 8 divisors (see below), whose sum is σ = 2818800. Its totient is φ = 1392512.

The previous prime is 2101423. The next prime is 2101433. The reversal of 2101431 is 1341012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2101431 - 2³ = 2101423 is a prime.

It is a super-2 number, since 2×2101431² = 8832024495522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506 + ... + 2543.

It is an arithmetic number, because the mean of its divisors is an integer number (352350).

2^2101431 is an apocalyptic number.

2101431 is a deficient number, since it is larger than the sum of its proper divisors (717369).

2101431 is a wasteful number, since it uses less digits than its factorization.

2101431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2101431 is about 1449.6313324428. The cubic root of 2101431 is about 128.0869973353.

Adding to 2101431 its reverse (1341012), we get a palindrome (3442443).

The spelling of 2101431 in words is "two million, one hundred one thousand, four hundred thirty-one".