47861431 has 2 divisors, whose sum is σ = 47861432. Its totient is φ = 47861430.

The previous prime is 47861419. The next prime is 47861467. The reversal of 47861431 is 13416874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47861431 is a prime.

It is a super-2 number, since 2×47861431² = 4581433154735522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47861131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23930715 + 23930716.

It is an arithmetic number, because the mean of its divisors is an integer number (23930716).

Almost surely, 2^47861431 is an apocalyptic number.

47861431 is a deficient number, since it is larger than the sum of its proper divisors (1).

47861431 is an equidigital number, since it uses as much as digits as its factorization.

47861431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 47861431 is about 6918.1956462650. The cubic root of 47861431 is about 363.0740640209.

The spelling of 47861431 in words is "forty-seven million, eight hundred sixty-one thousand, four hundred thirty-one".