31012420020103 has 8 divisors (see below), whose sum is σ = 32651273041920. Its totient is φ = 29374229037240.

The previous prime is 31012420020097. The next prime is 31012420020107. The reversal of 31012420020103 is 30102002421013.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31012420020103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012420020107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165413575 + ... + 165600952.

It is an arithmetic number, because the mean of its divisors is an integer number (4081409130240).

Almost surely, 2^{31012420020103} is an apocalyptic number.

31012420020103 is a deficient number, since it is larger than the sum of its proper divisors (1638853021817).

31012420020103 is a wasteful number, since it uses less digits than its factorization.

31012420020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331019477.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31012420020103 its reverse (30102002421013), we get a palindrome (61114422441116).

The spelling of 31012420020103 in words is "thirty-one trillion, twelve billion, four hundred twenty million, twenty thousand, one hundred three".