2112201431 has 4 divisors (see below), whose sum is σ = 2236448592. Its totient is φ = 1987954272.

The previous prime is 2112201419. The next prime is 2112201437. The reversal of 2112201431 is 1341022112.

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 2112201431 - 2²² = 2108007127 is a prime.

It is a super-2 number, since 2×2112201431² = 8922789770236895522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 124247143 = 2112201431 / (2 + 1 + 1 + 2 + 2 + 0 + 1 + 4 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112201437) 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, 62123555 + ... + 62123588.

It is an arithmetic number, because the mean of its divisors is an integer number (559112148).

Almost surely, 2^2112201431 is an apocalyptic number.

2112201431 is a deficient number, since it is larger than the sum of its proper divisors (124247161).

2112201431 is a wasteful number, since it uses less digits than its factorization.

2112201431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124247160.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2112201431 is about 45958.6926598223. The cubic root of 2112201431 is about 1283.0545196441.

Adding to 2112201431 its reverse (1341022112), we get a palindrome (3453223543).

The spelling of 2112201431 in words is "two billion, one hundred twelve million, two hundred one thousand, four hundred thirty-one".