47670731 has 4 divisors (see below), whose sum is σ = 47800992. Its totient is φ = 47540472.

The previous prime is 47670713. The next prime is 47670773. The reversal of 47670731 is 13707674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13707674 = 2 ⋅6853837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47670731 is a prime.

It is a super-2 number, since 2×47670731² = 4544997188148722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47670691 and 47670700.

It is not an unprimeable number, because it can be changed into a prime (47670131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64580 + ... + 65313.

It is an arithmetic number, because the mean of its divisors is an integer number (11950248).

Almost surely, 2^47670731 is an apocalyptic number.

47670731 is a deficient number, since it is larger than the sum of its proper divisors (130261).

47670731 is a wasteful number, since it uses less digits than its factorization.

47670731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130260.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 47670731 is about 6904.3993945889. The cubic root of 47670731 is about 362.5912090742.

The spelling of 47670731 in words is "forty-seven million, six hundred seventy thousand, seven hundred thirty-one".