31122231012101 has 4 divisors (see below), whose sum is σ = 32475371490912. Its totient is φ = 29769090533292.

The previous prime is 31122231012091. The next prime is 31122231012109. The reversal of 31122231012101 is 10121013222113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31122231012101 - 2¹⁴ = 31122230995717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122231012109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676570239371 + ... + 676570239416.

It is an arithmetic number, because the mean of its divisors is an integer number (8118842872728).

Almost surely, 2^{31122231012101} is an apocalyptic number.

It is an amenable number.

31122231012101 is a deficient number, since it is larger than the sum of its proper divisors (1353140478811).

31122231012101 is a wasteful number, since it uses less digits than its factorization.

31122231012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353140478810.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31122231012101 its reverse (10121013222113), we get a palindrome (41243244234214).

The spelling of 31122231012101 in words is "thirty-one trillion, one hundred twenty-two billion, two hundred thirty-one million, twelve thousand, one hundred one".