16857231403 has 2 divisors, whose sum is σ = 16857231404. Its totient is φ = 16857231402.

The previous prime is 16857231379. The next prime is 16857231437. The reversal of 16857231403 is 30413275861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16857231403 - 2⁹ = 16857230891 is a prime.

It is not a weakly prime, because it can be changed into another prime (16857231103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8428615701 + 8428615702.

It is an arithmetic number, because the mean of its divisors is an integer number (8428615702).

Almost surely, 2^16857231403 is an apocalyptic number.

16857231403 is a deficient number, since it is larger than the sum of its proper divisors (1).

16857231403 is an equidigital number, since it uses as much as digits as its factorization.

16857231403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 16857231403 in words is "sixteen billion, eight hundred fifty-seven million, two hundred thirty-one thousand, four hundred three".