31111020132 has 12 divisors (see below), whose sum is σ = 72592380336. Its totient is φ = 10370340040.

The previous prime is 31111020131. The next prime is 31111020133. The reversal of 31111020132 is 23102011113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31111020131) and next prime (31111020133).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (31111020131) 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, 1296292494 + ... + 1296292517.

It is an arithmetic number, because the mean of its divisors is an integer number (6049365028).

Almost surely, 2^31111020132 is an apocalyptic number.

It is an amenable number.

31111020132 is an abundant number, since it is smaller than the sum of its proper divisors (41481360204).

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

31111020132 is a wasteful number, since it uses less digits than its factorization.

31111020132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592585018 (or 2592585016 counting only the distinct ones).

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

Adding to 31111020132 its reverse (23102011113), we get a palindrome (54213031245).

The spelling of 31111020132 in words is "thirty-one billion, one hundred eleven million, twenty thousand, one hundred thirty-two".