47021331 has 24 divisors (see below), whose sum is σ = 73379520. Its totient is φ = 26704272.

The previous prime is 47021329. The next prime is 47021341. The reversal of 47021331 is 13312074.

It is not a de Polignac number, because 47021331 - 2¹ = 47021329 is a prime.

It is a super-2 number, since 2×47021331² = 4422011138023122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 47021298 and 47021307.

It is not an unprimeable number, because it can be changed into a prime (47021341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25420 + ... + 27206.

It is an arithmetic number, because the mean of its divisors is an integer number (3057480).

Almost surely, 2^47021331 is an apocalyptic number.

47021331 is a deficient number, since it is larger than the sum of its proper divisors (26358189).

47021331 is a wasteful number, since it uses less digits than its factorization.

47021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983 (or 1976 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 47021331 is about 6857.2101469913. The cubic root of 47021331 is about 360.9371954084.

The spelling of 47021331 in words is "forty-seven million, twenty-one thousand, three hundred thirty-one".