2131243017 has 16 divisors (see below), whose sum is σ = 2960314560. Its totient is φ = 1362675200.

The previous prime is 2131242989. The next prime is 2131243019. The reversal of 2131243017 is 7103421312.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131243017 is a prime.

It is a super-2 number, since 2×2131243017² = 9084393595022524578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131243019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139584 + ... + 154097.

It is an arithmetic number, because the mean of its divisors is an integer number (185019660).

Almost surely, 2^2131243017 is an apocalyptic number.

It is an amenable number.

2131243017 is a deficient number, since it is larger than the sum of its proper divisors (829071543).

2131243017 is a wasteful number, since it uses less digits than its factorization.

2131243017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293784.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2131243017 is about 46165.3876513563. The cubic root of 2131243017 is about 1286.8985882762.

Adding to 2131243017 its reverse (7103421312), we get a palindrome (9234664329).

The spelling of 2131243017 in words is "two billion, one hundred thirty-one million, two hundred forty-three thousand, seventeen".