2131710851 has 2 divisors, whose sum is σ = 2131710852.
Its totient is φ = 2131710850.
The previous prime is 2131710797. The next prime is 2131710913. The reversal of 2131710851 is 1580171312.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2131710851 - 218 = 2131448707 is a prime.
It is a super-2 number, since 2×21317108512 = 9088382304542288402, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (2131710151) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065855425 + 1065855426.
It is an arithmetic number, because the mean of its divisors is an integer number (1065855426).
Almost surely, 22131710851 is an apocalyptic number.
2131710851 is a deficient number, since it is larger than the sum of its proper divisors (1).
2131710851 is an equidigital number, since it uses as much as digits as its factorization.
2131710851 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1680, while the sum is 29.
The square root of 2131710851 is about 46170.4543079229.
The cubic root of 2131710851 is about 1286.9927447320.
The spelling of 2131710851 in words is "two billion, one hundred thirty-one million, seven hundred ten thousand, eight hundred fifty-one".