542513231 has 16 divisors (see below), whose sum is σ = 619472448. Its totient is φ = 470668800.

The previous prime is 542513227. The next prime is 542513243. The reversal of 542513231 is 132315245.

It is a happy number.

It is not a de Polignac number, because 542513231 - 2² = 542513227 is a prime.

It is a super-2 number, since 2×542513231² = 588641211620118722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542513231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542513131) 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, 226661 + ... + 229041.

It is an arithmetic number, because the mean of its divisors is an integer number (38717028).

Almost surely, 2^542513231 is an apocalyptic number.

542513231 is a deficient number, since it is larger than the sum of its proper divisors (76959217).

542513231 is a wasteful number, since it uses less digits than its factorization.

542513231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442.

The product of its digits is 3600, while the sum is 26.

The square root of 542513231 is about 23291.9134250495. The cubic root of 542513231 is about 815.5866557841.

Adding to 542513231 its reverse (132315245), we get a palindrome (674828476).

The spelling of 542513231 in words is "five hundred forty-two million, five hundred thirteen thousand, two hundred thirty-one".