155031130 has 16 divisors (see below), whose sum is σ = 279424800. Its totient is φ = 61930512.

The previous prime is 155031119. The next prime is 155031137. The reversal of 155031130 is 31130551.

It is a junction number, because it is equal to n+sod(n) for n = 155031098 and 155031107.

It is not an unprimeable number, because it can be changed into a prime (155031137) 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, 1980 + ... + 17719.

It is an arithmetic number, because the mean of its divisors is an integer number (17464050).

Almost surely, 2^155031130 is an apocalyptic number.

155031130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155031130 is a deficient number, since it is larger than the sum of its proper divisors (124393670).

155031130 is a wasteful number, since it uses less digits than its factorization.

155031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20493.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 155031130 is about 12451.1497461078. The cubic root of 155031130 is about 537.2044944991.

Adding to 155031130 its reverse (31130551), we get a palindrome (186161681).

The spelling of 155031130 in words is "one hundred fifty-five million, thirty-one thousand, one hundred thirty".