61031323 has 4 divisors (see below), whose sum is σ = 61077528. Its totient is φ = 60985120.

The previous prime is 61031291. The next prime is 61031353. The reversal of 61031323 is 32313016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61031323 - 2⁵ = 61031291 is a prime.

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 61031323.

It is not an unprimeable number, because it can be changed into a prime (61031353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21061 + ... + 23782.

It is an arithmetic number, because the mean of its divisors is an integer number (15269382).

Almost surely, 2^61031323 is an apocalyptic number.

61031323 is a deficient number, since it is larger than the sum of its proper divisors (46205).

61031323 is a wasteful number, since it uses less digits than its factorization.

61031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46204.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 61031323 is about 7812.2546681480. The cubic root of 61031323 is about 393.7170854153.

Adding to 61031323 its reverse (32313016), we get a palindrome (93344339).

The spelling of 61031323 in words is "sixty-one million, thirty-one thousand, three hundred twenty-three".