2131244489 has 4 divisors (see below), whose sum is σ = 2324994000. Its totient is φ = 1937494980.

The previous prime is 2131244477. The next prime is 2131244501. The reversal of 2131244489 is 9844421312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2131244477) and next prime (2131244501).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131244489 is a prime.

It is a super-2 number, since 2×2131244489² = 9084406143785742242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131244419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96874739 + ... + 96874760.

It is an arithmetic number, because the mean of its divisors is an integer number (581248500).

Almost surely, 2^2131244489 is an apocalyptic number.

It is an amenable number.

2131244489 is a deficient number, since it is larger than the sum of its proper divisors (193749511).

2131244489 is a wasteful number, since it uses less digits than its factorization.

2131244489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193749510.

The product of its digits is 55296, while the sum is 38.

The square root of 2131244489 is about 46165.4035940335. The cubic root of 2131244489 is about 1286.8988845531.

The spelling of 2131244489 in words is "two billion, one hundred thirty-one million, two hundred forty-four thousand, four hundred eighty-nine".