61312122 has 24 divisors (see below), whose sum is σ = 133024320. Its totient is φ = 20409480.

The previous prime is 61312103. The next prime is 61312133. The reversal of 61312122 is 22121316.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 61312095 and 61312104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14529 + ... + 18267.

It is an arithmetic number, because the mean of its divisors is an integer number (5542680).

Almost surely, 2^61312122 is an apocalyptic number.

61312122 is an abundant number, since it is smaller than the sum of its proper divisors (71712198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61312122 is a wasteful number, since it uses less digits than its factorization.

61312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658 (or 4655 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 61312122 is about 7830.2057444233. The cubic root of 61312122 is about 394.3199793563.

Adding to 61312122 its reverse (22121316), we get a palindrome (83433438).

The spelling of 61312122 in words is "sixty-one million, three hundred twelve thousand, one hundred twenty-two".