31999929295103 has 128 divisors (see below), whose sum is σ = 42324467908608. Its totient is φ = 23470611840000.

The previous prime is 31999929295097. The next prime is 31999929295109. The reversal of 31999929295103 is 30159292999913.

It is a Cunningham number, because it is equal to 5656848²-1.

It is an interprime number because it is at equal distance from previous prime (31999929295097) and next prime (31999929295109).

It is a cyclic number.

It is not a de Polignac number, because 31999929295103 - 2⁶ = 31999929295039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31999929295109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7563204998 + ... + 7563209228.

It is an arithmetic number, because the mean of its divisors is an integer number (330659905536).

Almost surely, 2^{31999929295103} is an apocalyptic number.

31999929295103 is a deficient number, since it is larger than the sum of its proper divisors (10324538613505).

31999929295103 is a wasteful number, since it uses less digits than its factorization.

31999929295103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837.

The product of its (nonzero) digits is 95659380, while the sum is 71.

The spelling of 31999929295103 in words is "thirty-one trillion, nine hundred ninety-nine billion, nine hundred twenty-nine million, two hundred ninety-five thousand, one hundred three".