2101434431 has 4 divisors (see below), whose sum is σ = 2132799192. Its totient is φ = 2070069672.

The previous prime is 2101434427. The next prime is 2101434443. The reversal of 2101434431 is 1344341012.

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 2101434431 - 2² = 2101434427 is a prime.

It is a super-2 number, since 2×2101434431² = 8832053335584587522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101434397 and 2101434406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101434451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15682280 + ... + 15682413.

It is an arithmetic number, because the mean of its divisors is an integer number (533199798).

Almost surely, 2^2101434431 is an apocalyptic number.

2101434431 is a deficient number, since it is larger than the sum of its proper divisors (31364761).

2101434431 is an equidigital number, since it uses as much as digits as its factorization.

2101434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31364760.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2101434431 is about 45841.4052031567. The cubic root of 2101434431 is about 1280.8706704432.

Adding to 2101434431 its reverse (1344341012), we get a palindrome (3445775443).

The spelling of 2101434431 in words is "two billion, one hundred one million, four hundred thirty-four thousand, four hundred thirty-one".