201471631 has 2 divisors, whose sum is σ = 201471632. Its totient is φ = 201471630.

The previous prime is 201471601. The next prime is 201471637. The reversal of 201471631 is 136174102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201471631 - 2⁹ = 201471119 is a prime.

It is a super-2 number, since 2×201471631² = 81181636195600322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201471596 and 201471605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201471637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100735815 + 100735816.

It is an arithmetic number, because the mean of its divisors is an integer number (100735816).

Almost surely, 2^201471631 is an apocalyptic number.

201471631 is a deficient number, since it is larger than the sum of its proper divisors (1).

201471631 is an equidigital number, since it uses as much as digits as its factorization.

201471631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 201471631 is about 14194.0702759991. The cubic root of 201471631 is about 586.2344022594.

The spelling of 201471631 in words is "two hundred one million, four hundred seventy-one thousand, six hundred thirty-one".