4221523131 has 16 divisors (see below), whose sum is σ = 6461650944. Its totient is φ = 2401478784.

The previous prime is 4221523081. The next prime is 4221523133. The reversal of 4221523131 is 1313251224.

It is not a de Polignac number, because 4221523131 - 2¹⁸ = 4221260987 is a prime.

It is a super-2 number, since 2×4221523131² = 35642515091136086322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4221523133) 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, 446046 + ... + 455411.

It is an arithmetic number, because the mean of its divisors is an integer number (403853184).

Almost surely, 2^4221523131 is an apocalyptic number.

4221523131 is a deficient number, since it is larger than the sum of its proper divisors (2240127813).

4221523131 is a wasteful number, since it uses less digits than its factorization.

4221523131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901690.

The product of its digits is 1440, while the sum is 24.

The square root of 4221523131 is about 64973.2493492514. The cubic root of 4221523131 is about 1616.1799861767.

Adding to 4221523131 its reverse (1313251224), we get a palindrome (5534774355).

The spelling of 4221523131 in words is "four billion, two hundred twenty-one million, five hundred twenty-three thousand, one hundred thirty-one".