2100431431 has 8 divisors (see below), whose sum is σ = 2400869024. Its totient is φ = 1800087840.

The previous prime is 2100431423. The next prime is 2100431467. The reversal of 2100431431 is 1341340012.

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 2100431431 - 2³ = 2100431423 is a prime.

It is a super-2 number, since 2×2100431431² = 8823624392665415522, 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 = 2100431399 and 2100431408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100431471) 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, 33661 + ... + 73033.

It is an arithmetic number, because the mean of its divisors is an integer number (300108628).

Almost surely, 2^2100431431 is an apocalyptic number.

2100431431 is a deficient number, since it is larger than the sum of its proper divisors (300437593).

2100431431 is an equidigital number, since it uses as much as digits as its factorization.

2100431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47001.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2100431431 is about 45830.4640059426. The cubic root of 2100431431 is about 1280.6668544668. Note that the first 3 decimals are identical.

Adding to 2100431431 its reverse (1341340012), we get a palindrome (3441771443).

The spelling of 2100431431 in words is "two billion, one hundred million, four hundred thirty-one thousand, four hundred thirty-one".