241491631 has 2 divisors, whose sum is σ = 241491632. Its totient is φ = 241491630.

The previous prime is 241491583. The next prime is 241491667. The reversal of 241491631 is 136194142.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 241491631 - 2¹³ = 241483439 is a prime.

It is a super-2 number, since 2×241491631² = 116636415686080322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 241491593 and 241491602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241491031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120745815 + 120745816.

It is an arithmetic number, because the mean of its divisors is an integer number (120745816).

Almost surely, 2^241491631 is an apocalyptic number.

241491631 is a deficient number, since it is larger than the sum of its proper divisors (1).

241491631 is an equidigital number, since it uses as much as digits as its factorization.

241491631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 241491631 is about 15540.0009974260. Note that the first 3 decimals coincide. The cubic root of 241491631 is about 622.7312998840.

Subtracting from 241491631 its sum of digits (31), we obtain a square (241491600 = 15540²).

The spelling of 241491631 in words is "two hundred forty-one million, four hundred ninety-one thousand, six hundred thirty-one".