72131311333102 has 16 divisors (see below), whose sum is σ = 124344479237760. Its totient is φ = 30740718476088.

The previous prime is 72131311333099. The next prime is 72131311333117. The reversal of 72131311333102 is 20133311313127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14391719628 + ... + 14391724639.

It is an arithmetic number, because the mean of its divisors is an integer number (7771529952360).

Almost surely, 2^{72131311333102} is an apocalyptic number.

72131311333102 is a deficient number, since it is larger than the sum of its proper divisors (52213167904658).

72131311333102 is a wasteful number, since it uses less digits than its factorization.

72131311333102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28783444455.

The product of its (nonzero) digits is 6804, while the sum is 31.

Adding to 72131311333102 its reverse (20133311313127), we get a palindrome (92264622646229).

The spelling of 72131311333102 in words is "seventy-two trillion, one hundred thirty-one billion, three hundred eleven million, three hundred thirty-three thousand, one hundred two".