2157431435 has 8 divisors (see below), whose sum is σ = 2589325920. Its totient is φ = 1725673024.

The previous prime is 2157431431. The next prime is 2157431449. The reversal of 2157431435 is 5341347512.

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 2157431435 - 2² = 2157431431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2157431395 and 2157431404.

It is not an unprimeable number, because it can be changed into a prime (2157431431) 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, 4919 + ... + 65871.

It is an arithmetic number, because the mean of its divisors is an integer number (323665740).

Almost surely, 2^2157431435 is an apocalyptic number.

2157431435 is a deficient number, since it is larger than the sum of its proper divisors (431894485).

2157431435 is an equidigital number, since it uses as much as digits as its factorization.

2157431435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68037.

The product of its digits is 50400, while the sum is 35.

The square root of 2157431435 is about 46448.1585749102. The cubic root of 2157431435 is about 1292.1482213803.

Adding to 2157431435 its reverse (5341347512), we get a palindrome (7498778947).

The spelling of 2157431435 in words is "two billion, one hundred fifty-seven million, four hundred thirty-one thousand, four hundred thirty-five".