155032131 has 8 divisors (see below), whose sum is σ = 209200320. Its totient is φ = 102109352.

The previous prime is 155032127. The next prime is 155032133. The reversal of 155032131 is 131230551.

155032131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155032131 - 2² = 155032127 is a prime.

It is a super-2 number, since 2×155032131² = 48069923284802322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155032098 and 155032107.

It is not an unprimeable number, because it can be changed into a prime (155032133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311061 + ... + 311558.

It is an arithmetic number, because the mean of its divisors is an integer number (26150040).

Almost surely, 2^155032131 is an apocalyptic number.

155032131 is a deficient number, since it is larger than the sum of its proper divisors (54168189).

155032131 is an equidigital number, since it uses as much as digits as its factorization.

155032131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622705.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 155032131 is about 12451.1899431339. The cubic root of 155032131 is about 537.2056506982.

Adding to 155032131 its reverse (131230551), we get a palindrome (286262682).

The spelling of 155032131 in words is "one hundred fifty-five million, thirty-two thousand, one hundred thirty-one".