47013931 has 4 divisors (see below), whose sum is σ = 47132752. Its totient is φ = 46895112.

The previous prime is 47013919. The next prime is 47013943. The reversal of 47013931 is 13931074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13931074 = 2 ⋅6965537.

It is an interprime number because it is at equal distance from previous prime (47013919) and next prime (47013943).

It is a cyclic number.

It is not a de Polignac number, because 47013931 - 2¹⁹ = 46489643 is a prime.

It is a super-2 number, since 2×47013931² = 4420619416145522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47013931.

It is not an unprimeable number, because it can be changed into a prime (47013991) 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, 58815 + ... + 59608.

It is an arithmetic number, because the mean of its divisors is an integer number (11783188).

Almost surely, 2^47013931 is an apocalyptic number.

47013931 is a deficient number, since it is larger than the sum of its proper divisors (118821).

47013931 is a wasteful number, since it uses less digits than its factorization.

47013931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118820.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 47013931 is about 6856.6705477221. The cubic root of 47013931 is about 360.9182602052.

The spelling of 47013931 in words is "forty-seven million, thirteen thousand, nine hundred thirty-one".