131212021430 has 32 divisors (see below), whose sum is σ = 270178848000. Its totient is φ = 44944149600.

The previous prime is 131212021411. The next prime is 131212021433. The reversal of 131212021430 is 34120212131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212021433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 818180 + ... + 965319.

It is an arithmetic number, because the mean of its divisors is an integer number (8443089000).

Almost surely, 2^131212021430 is an apocalyptic number.

131212021430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131212021430 is an abundant number, since it is smaller than the sum of its proper divisors (138966826570).

131212021430 is a wasteful number, since it uses less digits than its factorization.

131212021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784564.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131212021430 its reverse (34120212131), we get a palindrome (165332233561).

The spelling of 131212021430 in words is "one hundred thirty-one billion, two hundred twelve million, twenty-one thousand, four hundred thirty".