947231331 has 8 divisors (see below), whose sum is σ = 1263147600. Its totient is φ = 631401312.

The previous prime is 947231297. The next prime is 947231353. The reversal of 947231331 is 133132749.

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

It is not a de Polignac number, because 947231331 - 2⁶ = 947231267 is a prime.

It is a super-2 number, since 2×947231331² = 1794494388856063122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 947231292 and 947231301.

It is not an unprimeable number, because it can be changed into a prime (947231431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11161 + ... + 44933.

It is an arithmetic number, because the mean of its divisors is an integer number (157893450).

Almost surely, 2^947231331 is an apocalyptic number.

947231331 is a deficient number, since it is larger than the sum of its proper divisors (315916269).

947231331 is a wasteful number, since it uses less digits than its factorization.

947231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43125.

The product of its digits is 13608, while the sum is 33.

The square root of 947231331 is about 30777.1235010681. The cubic root of 947231331 is about 982.0916490910.

The spelling of 947231331 in words is "nine hundred forty-seven million, two hundred thirty-one thousand, three hundred thirty-one".