61040023 has 12 divisors (see below), whose sum is σ = 69262144. Its totient is φ = 53697600.

The previous prime is 61040017. The next prime is 61040033. The reversal of 61040023 is 32004016.

It is not a de Polignac number, because 61040023 - 2⁵ = 61039991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61039979 and 61040006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61040033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4386 + ... + 11887.

Almost surely, 2^61040023 is an apocalyptic number.

61040023 is a deficient number, since it is larger than the sum of its proper divisors (8222121).

61040023 is a wasteful number, since it uses less digits than its factorization.

61040023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16326 (or 16315 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 61040023 is about 7812.8114657913. The cubic root of 61040023 is about 393.7357926175.

Adding to 61040023 its reverse (32004016), we get a palindrome (93044039).

The spelling of 61040023 in words is "sixty-one million, forty thousand, twenty-three".