61311426 has 48 divisors (see below), whose sum is σ = 136617600. Its totient is φ = 18326880.

The previous prime is 61311403. The next prime is 61311451. The reversal of 61311426 is 62411316.

61311426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61311396 and 61311405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56820 + ... + 57888.

It is an arithmetic number, because the mean of its divisors is an integer number (2846200).

Almost surely, 2^61311426 is an apocalyptic number.

61311426 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 61311426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68308800).

61311426 is an abundant number, since it is smaller than the sum of its proper divisors (75306174).

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

61311426 is a wasteful number, since it uses less digits than its factorization.

61311426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1164 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 61311426 is about 7830.1613010206. The cubic root of 61311426 is about 394.3184872764.

It can be divided in two parts, 6131 and 1426, that added together give a palindrome (7557).

The spelling of 61311426 in words is "sixty-one million, three hundred eleven thousand, four hundred twenty-six".