31121310201 has 8 divisors (see below), whose sum is σ = 41529181344. Its totient is φ = 20730489600.

The previous prime is 31121310197. The next prime is 31121310251. The reversal of 31121310201 is 10201312113.

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 31121310201 - 2² = 31121310197 is a prime.

It is a super-3 number, since 3×31121310201³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31121310251) 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, 4258375 + ... + 4265676.

It is an arithmetic number, because the mean of its divisors is an integer number (5191147668).

Almost surely, 2^31121310201 is an apocalyptic number.

It is an amenable number.

31121310201 is a deficient number, since it is larger than the sum of its proper divisors (10407871143).

31121310201 is a wasteful number, since it uses less digits than its factorization.

31121310201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525271.

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

Adding to 31121310201 its reverse (10201312113), we get a palindrome (41322622314).

The spelling of 31121310201 in words is "thirty-one billion, one hundred twenty-one million, three hundred ten thousand, two hundred one".