47085731 has 16 divisors (see below), whose sum is σ = 60073728. Its totient is φ = 35834400.

The previous prime is 47085673. The next prime is 47085739. The reversal of 47085731 is 13758074.

It is not a de Polignac number, because 47085731 - 2¹⁰ = 47084707 is a prime.

It is a super-2 number, since 2×47085731² = 4434132127608722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47085691 and 47085700.

It is not an unprimeable number, because it can be changed into a prime (47085739) 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, 3800 + ... + 10421.

It is an arithmetic number, because the mean of its divisors is an integer number (3754608).

Almost surely, 2^47085731 is an apocalyptic number.

47085731 is a deficient number, since it is larger than the sum of its proper divisors (12987997).

47085731 is a wasteful number, since it uses less digits than its factorization.

47085731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14282.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 47085731 is about 6861.9043275173. The cubic root of 47085731 is about 361.1018990383.

The spelling of 47085731 in words is "forty-seven million, eighty-five thousand, seven hundred thirty-one".