31201321101 has 8 divisors (see below), whose sum is σ = 41606373984. Its totient is φ = 20798574480.

The previous prime is 31201321069. The next prime is 31201321111. The reversal of 31201321101 is 10112310213.

It is a happy number.

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

It is not a de Polignac number, because 31201321101 - 2⁵ = 31201321069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201321111) 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, 544746 + ... + 599291.

It is an arithmetic number, because the mean of its divisors is an integer number (5200796748).

Almost surely, 2^31201321101 is an apocalyptic number.

It is an amenable number.

31201321101 is a deficient number, since it is larger than the sum of its proper divisors (10405052883).

31201321101 is a wasteful number, since it uses less digits than its factorization.

31201321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153131.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31201321101 its reverse (10112310213), we get a palindrome (41313631314).

The spelling of 31201321101 in words is "thirty-one billion, two hundred one million, three hundred twenty-one thousand, one hundred one".