31021011103 has 8 divisors (see below), whose sum is σ = 32853004272. Its totient is φ = 29189821056.

The previous prime is 31021011101. The next prime is 31021011121. The reversal of 31021011103 is 30111012013.

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

It is a cyclic number.

It is not a de Polignac number, because 31021011103 - 2¹ = 31021011101 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 (31021011101) 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, 120325 + ... + 276622.

It is an arithmetic number, because the mean of its divisors is an integer number (4106625534).

Almost surely, 2^31021011103 is an apocalyptic number.

31021011103 is a deficient number, since it is larger than the sum of its proper divisors (1831993169).

31021011103 is a wasteful number, since it uses less digits than its factorization.

31021011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401561.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31021011103 its reverse (30111012013), we get a palindrome (61132023116).

The spelling of 31021011103 in words is "thirty-one billion, twenty-one million, eleven thousand, one hundred three".