61283331 has 16 divisors (see below), whose sum is σ = 90910720. Its totient is φ = 40801320.

The previous prime is 61283329. The next prime is 61283357. The reversal of 61283331 is 13338216.

It is a happy number.

It is not a de Polignac number, because 61283331 - 2¹ = 61283329 is a prime.

It is a super-2 number, since 2×61283331² = 7511293316911122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61283295 and 61283304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61233331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38946 + ... + 40488.

It is an arithmetic number, because the mean of its divisors is an integer number (5681920).

Almost surely, 2^61283331 is an apocalyptic number.

61283331 is a deficient number, since it is larger than the sum of its proper divisors (29627389).

61283331 is a wasteful number, since it uses less digits than its factorization.

61283331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023 (or 3017 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 61283331 is about 7828.3670711075. The cubic root of 61283331 is about 394.2582479854.

The spelling of 61283331 in words is "sixty-one million, two hundred eighty-three thousand, three hundred thirty-one".