131211142 has 8 divisors (see below), whose sum is σ = 196927416. Its totient is φ = 65568672.

The previous prime is 131211137. The next prime is 131211163. The reversal of 131211142 is 241112131.

131211142 is digitally balanced in base 3, 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13768 + ... + 21259.

It is an arithmetic number, because the mean of its divisors is an integer number (24615927).

Almost surely, 2^131211142 is an apocalyptic number.

131211142 is a deficient number, since it is larger than the sum of its proper divisors (65716274).

131211142 is a wasteful number, since it uses less digits than its factorization.

131211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36902.

The product of its digits is 48, while the sum is 16.

The square root of 131211142 is about 11454.7432096927. The cubic root of 131211142 is about 508.1480209116.

Adding to 131211142 its reverse (241112131), we get a palindrome (372323273).

The spelling of 131211142 in words is "one hundred thirty-one million, two hundred eleven thousand, one hundred forty-two".