33131001012 has 24 divisors (see below), whose sum is σ = 78056212416. Its totient is φ = 10936446528.

The previous prime is 33131001011. The next prime is 33131001023. The reversal of 33131001012 is 21010013133.

It is a junction number, because it is equal to n+sod(n) for n = 33131000982 and 33131001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33131001011) 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, 13401273 + ... + 13403744.

It is an arithmetic number, because the mean of its divisors is an integer number (3252342184).

Almost surely, 2^33131001012 is an apocalyptic number.

It is an amenable number.

33131001012 is an abundant number, since it is smaller than the sum of its proper divisors (44925211404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33131001012 is a wasteful number, since it uses less digits than its factorization.

33131001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26805127 (or 26805125 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 33131001012 its reverse (21010013133), we get a palindrome (54141014145).

The spelling of 33131001012 in words is "thirty-three billion, one hundred thirty-one million, one thousand, twelve".