131212001023402 has 8 divisors (see below), whose sum is σ = 211957847807076. Its totient is φ = 60559385087712.

The previous prime is 131212001023387. The next prime is 131212001023421. The reversal of 131212001023402 is 204320100212131.

It can be written as a sum of positive squares in 2 ways, for example, as 128977337798761 + 2234663224641 = 11356819^2 + 1494879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×131212001023402³ (a number of 43 digits) contains 333 as substring.

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, 2523307711963 + ... + 2523307712014.

Almost surely, 2^{131212001023402} is an apocalyptic number.

131212001023402 is a deficient number, since it is larger than the sum of its proper divisors (80745846783674).

131212001023402 is a wasteful number, since it uses less digits than its factorization.

131212001023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046615423992.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 131212001023402 its reverse (204320100212131), we get a palindrome (335532101235533).

The spelling of 131212001023402 in words is "one hundred thirty-one trillion, two hundred twelve billion, one million, twenty-three thousand, four hundred two".