2420131591 has 4 divisors (see below), whose sum is σ = 2498200384. Its totient is φ = 2342062800.

The previous prime is 2420131573. The next prime is 2420131601. The reversal of 2420131591 is 1951310242.

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 2420131591 - 2¹⁷ = 2420000519 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 (2420131501) 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, 39034350 + ... + 39034411.

It is an arithmetic number, because the mean of its divisors is an integer number (624550096).

Almost surely, 2^2420131591 is an apocalyptic number.

2420131591 is a deficient number, since it is larger than the sum of its proper divisors (78068793).

2420131591 is an equidigital number, since it uses as much as digits as its factorization.

2420131591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78068792.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2420131591 is about 49194.8329705468. The cubic root of 2420131591 is about 1342.5990232897.

The spelling of 2420131591 in words is "two billion, four hundred twenty million, one hundred thirty-one thousand, five hundred ninety-one".