61322313 has 8 divisors (see below), whose sum is σ = 88052608. Its totient is φ = 37736784.

The previous prime is 61322311. The next prime is 61322323. The reversal of 61322313 is 31322316.

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

It is not a de Polignac number, because 61322313 - 2¹ = 61322311 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 61322313.

It is not an unprimeable number, because it can be changed into a prime (61322311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786145 + ... + 786222.

It is an arithmetic number, because the mean of its divisors is an integer number (11006576).

Almost surely, 2^61322313 is an apocalyptic number.

It is an amenable number.

61322313 is a deficient number, since it is larger than the sum of its proper divisors (26730295).

61322313 is a wasteful number, since it uses less digits than its factorization.

61322313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572383.

The product of its digits is 648, while the sum is 21.

The square root of 61322313 is about 7830.8564665686. The cubic root of 61322313 is about 394.3418254565.

Adding to 61322313 its reverse (31322316), we get a palindrome (92644629).

The spelling of 61322313 in words is "sixty-one million, three hundred twenty-two thousand, three hundred thirteen".