861274131 has 8 divisors (see below), whose sum is σ = 1150378944. Its totient is φ = 573176040.

The previous prime is 861274109. The next prime is 861274157. The reversal of 861274131 is 131472168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 861274131 - 2¹⁵ = 861241363 is a prime.

It is a super-2 number, since 2×861274131² = 1483586257459610322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 861274092 and 861274101.

It is not an unprimeable number, because it can be changed into a prime (861274181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249681 + ... + 253106.

It is an arithmetic number, because the mean of its divisors is an integer number (143797368).

Almost surely, 2^861274131 is an apocalyptic number.

861274131 is a deficient number, since it is larger than the sum of its proper divisors (289104813).

861274131 is a wasteful number, since it uses less digits than its factorization.

861274131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503361.

The product of its digits is 8064, while the sum is 33.

The square root of 861274131 is about 29347.4723102348. The cubic root of 861274131 is about 951.4379446445.

The spelling of 861274131 in words is "eight hundred sixty-one million, two hundred seventy-four thousand, one hundred thirty-one".