155234331 has 12 divisors (see below), whose sum is σ = 256259952. Its totient is φ = 88705296.

The previous prime is 155234269. The next prime is 155234333. The reversal of 155234331 is 133432551.

It is not a de Polignac number, because 155234331 - 2¹⁹ = 154710043 is a prime.

It is a super-2 number, since 2×155234331² = 48195395042035122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155234295 and 155234304.

It is not an unprimeable number, because it can be changed into a prime (155234333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1231956 + ... + 1232081.

It is an arithmetic number, because the mean of its divisors is an integer number (21354996).

Almost surely, 2^155234331 is an apocalyptic number.

155234331 is a deficient number, since it is larger than the sum of its proper divisors (101025621).

155234331 is a wasteful number, since it uses less digits than its factorization.

155234331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464050 (or 2464047 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 155234331 is about 12459.3070032005. The cubic root of 155234331 is about 537.4390986344.

Adding to 155234331 its reverse (133432551), we get a palindrome (288666882).

The spelling of 155234331 in words is "one hundred fifty-five million, two hundred thirty-four thousand, three hundred thirty-one".