47311431 has 8 divisors (see below), whose sum is σ = 63122304. Its totient is φ = 31520760.

The previous prime is 47311427. The next prime is 47311477. The reversal of 47311431 is 13411374.

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

It is not a de Polignac number, because 47311431 - 2² = 47311427 is a prime.

It is a super-2 number, since 2×47311431² = 4476743006535522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47311931) 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, 1710 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (7890288).

Almost surely, 2^47311431 is an apocalyptic number.

47311431 is a deficient number, since it is larger than the sum of its proper divisors (15810873).

47311431 is a wasteful number, since it uses less digits than its factorization.

47311431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101.

The product of its digits is 1008, while the sum is 24.

The square root of 47311431 is about 6878.3305387281. The cubic root of 47311431 is about 361.6779463260.

The spelling of 47311431 in words is "forty-seven million, three hundred eleven thousand, four hundred thirty-one".