61340531 has 8 divisors (see below), whose sum is σ = 73793280. Its totient is φ = 49810248.

The previous prime is 61340527. The next prime is 61340567. The reversal of 61340531 is 13504316.

It is a happy number.

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

It is not a de Polignac number, because 61340531 - 2² = 61340527 is a prime.

It is a super-2 number, since 2×61340531² = 7525321486723922, 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 = 61340497 and 61340506.

It is not an unprimeable number, because it can be changed into a prime (61340501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230471 + ... + 230736.

It is an arithmetic number, because the mean of its divisors is an integer number (9224160).

Almost surely, 2^61340531 is an apocalyptic number.

61340531 is a deficient number, since it is larger than the sum of its proper divisors (12452749).

61340531 is a wasteful number, since it uses less digits than its factorization.

61340531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461233.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 61340531 is about 7832.0195990562. The cubic root of 61340531 is about 394.3808727337.

Adding to 61340531 its reverse (13504316), we get a palindrome (74844847).

The spelling of 61340531 in words is "sixty-one million, three hundred forty thousand, five hundred thirty-one".