155204031 has 8 divisors (see below), whose sum is σ = 208770480. Its totient is φ = 102553472.

The previous prime is 155204017. The next prime is 155204039. The reversal of 155204031 is 130402551.

155204031 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 155204031 - 2⁶ = 155203967 is a prime.

It is a super-2 number, since 2×155204031² = 48176582477297922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155203989 and 155204007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155204039) 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, 228576 + ... + 229253.

It is an arithmetic number, because the mean of its divisors is an integer number (26096310).

Almost surely, 2^155204031 is an apocalyptic number.

155204031 is a deficient number, since it is larger than the sum of its proper divisors (53566449).

155204031 is a wasteful number, since it uses less digits than its factorization.

155204031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457945.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 155204031 is about 12458.0909853797. The cubic root of 155204031 is about 537.4041289980.

Adding to 155204031 its reverse (130402551), we get a palindrome (285606582).

The spelling of 155204031 in words is "one hundred fifty-five million, two hundred four thousand, thirty-one".