47351531 has 2 divisors, whose sum is σ = 47351532. Its totient is φ = 47351530.

The previous prime is 47351501. The next prime is 47351537. The reversal of 47351531 is 13515374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47351531 - 2⁶ = 47351467 is a prime.

It is a super-2 number, since 2×47351531² = 4484334976087922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47351494 and 47351503.

It is not a weakly prime, because it can be changed into another prime (47351537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23675765 + 23675766.

It is an arithmetic number, because the mean of its divisors is an integer number (23675766).

Almost surely, 2^47351531 is an apocalyptic number.

47351531 is a deficient number, since it is larger than the sum of its proper divisors (1).

47351531 is an equidigital number, since it uses as much as digits as its factorization.

47351531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 29.

The square root of 47351531 is about 6881.2448728410. The cubic root of 47351531 is about 361.7801005674.

The spelling of 47351531 in words is "forty-seven million, three hundred fifty-one thousand, five hundred thirty-one".