155341331 has 2 divisors, whose sum is σ = 155341332. Its totient is φ = 155341330.

The previous prime is 155341297. The next prime is 155341343. The reversal of 155341331 is 133143551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155341331 - 2¹⁸ = 155079187 is a prime.

It is a super-2 number, since 2×155341331² = 48261858233703122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155341331.

It is not a weakly prime, because it can be changed into another prime (155341231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77670665 + 77670666.

It is an arithmetic number, because the mean of its divisors is an integer number (77670666).

Almost surely, 2^155341331 is an apocalyptic number.

155341331 is a deficient number, since it is larger than the sum of its proper divisors (1).

155341331 is an equidigital number, since it uses as much as digits as its factorization.

155341331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 155341331 is about 12463.6002423056. The cubic root of 155341331 is about 537.5625523740.

Adding to 155341331 its reverse (133143551), we get a palindrome (288484882).

The spelling of 155341331 in words is "one hundred fifty-five million, three hundred forty-one thousand, three hundred thirty-one".