61319871 has 12 divisors (see below), whose sum is σ = 88973248. Its totient is φ = 40695264.

The previous prime is 61319861. The next prime is 61319893. The reversal of 61319871 is 17891316.

It is not a de Polignac number, because 61319871 - 2⁷ = 61319743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61319801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13270 + ... + 17283.

Almost surely, 2^61319871 is an apocalyptic number.

61319871 is a deficient number, since it is larger than the sum of its proper divisors (27653377).

61319871 is a wasteful number, since it uses less digits than its factorization.

61319871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30782 (or 30779 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 61319871 is about 7830.7005433741. The cubic root of 61319871 is about 394.3365908446.

The spelling of 61319871 in words is "sixty-one million, three hundred nineteen thousand, eight hundred seventy-one".