131121230 has 32 divisors (see below), whose sum is σ = 239928480. Its totient is φ = 51587200.

The previous prime is 131121181. The next prime is 131121241. The reversal of 131121230 is 32121131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198641 + ... + 199299.

It is an arithmetic number, because the mean of its divisors is an integer number (7497765).

Almost surely, 2^131121230 is an apocalyptic number.

131121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131121230 is a deficient number, since it is larger than the sum of its proper divisors (108807250).

131121230 is a wasteful number, since it uses less digits than its factorization.

131121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131121230 is about 11450.8178747197. The cubic root of 131121230 is about 508.0319254741.

Adding to 131121230 its reverse (32121131), we get a palindrome (163242361).

Subtracting from 131121230 its reverse (32121131), we obtain a palindrome (99000099).

The spelling of 131121230 in words is "one hundred thirty-one million, one hundred twenty-one thousand, two hundred thirty".