61312106 has 4 divisors (see below), whose sum is σ = 91968162. Its totient is φ = 30656052.

The previous prime is 61312103. The next prime is 61312133. The reversal of 61312106 is 60121316.

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

It can be written as a sum of positive squares in only one way, i.e., 39175081 + 22137025 = 6259^2 + 4705^2 .

It is not an unprimeable number, because it can be changed into a prime (61312103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15328025 + ... + 15328028.

Almost surely, 2^61312106 is an apocalyptic number.

61312106 is a deficient number, since it is larger than the sum of its proper divisors (30656056).

61312106 is a wasteful number, since it uses less digits than its factorization.

61312106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30656055.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 61312106 is about 7830.2047227387. The cubic root of 61312106 is about 394.3199450557.

The spelling of 61312106 in words is "sixty-one million, three hundred twelve thousand, one hundred six".