61214531 has 8 divisors (see below), whose sum is σ = 70045440. Its totient is φ = 52405128.

The previous prime is 61214521. The next prime is 61214557. The reversal of 61214531 is 13541216.

61214531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61214531 - 2¹⁸ = 60952387 is a prime.

It is a super-2 number, since 2×61214531² = 7494437611099922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61214497 and 61214506.

It is not an unprimeable number, because it can be changed into a prime (61214521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280 + ... + 11138.

It is an arithmetic number, because the mean of its divisors is an integer number (8755680).

Almost surely, 2^61214531 is an apocalyptic number.

61214531 is a deficient number, since it is larger than the sum of its proper divisors (8830909).

61214531 is an equidigital number, since it uses as much as digits as its factorization.

61214531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10753.

The product of its digits is 720, while the sum is 23.

The square root of 61214531 is about 7823.9715618093. The cubic root of 61214531 is about 394.1106541563.

Adding to 61214531 its reverse (13541216), we get a palindrome (74755747).

The spelling of 61214531 in words is "sixty-one million, two hundred fourteen thousand, five hundred thirty-one".