2141531479 has 4 divisors (see below), whose sum is σ = 2145739320. Its totient is φ = 2137323640.

The previous prime is 2141531471. The next prime is 2141531521. The reversal of 2141531479 is 9741351412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2141531479 - 2³ = 2141531471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141531471) 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, 2103157 + ... + 2104174.

It is an arithmetic number, because the mean of its divisors is an integer number (536434830).

Almost surely, 2^2141531479 is an apocalyptic number.

2141531479 is a deficient number, since it is larger than the sum of its proper divisors (4207841).

2141531479 is an equidigital number, since it uses as much as digits as its factorization.

2141531479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207840.

The product of its digits is 30240, while the sum is 37.

The square root of 2141531479 is about 46276.6839671989. The cubic root of 2141531479 is about 1288.9660763742.

The spelling of 2141531479 in words is "two billion, one hundred forty-one million, five hundred thirty-one thousand, four hundred seventy-nine".