31101434120 has 32 divisors (see below), whose sum is σ = 70128115200. Its totient is φ = 12413926848.

The previous prime is 31101434101. The next prime is 31101434129. The reversal of 31101434120 is 2143410113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31101434092 and 31101434101.

It is not an unprimeable number, because it can be changed into a prime (31101434129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813800 + ... + 851159.

It is an arithmetic number, because the mean of its divisors is an integer number (2191503600).

Almost surely, 2^31101434120 is an apocalyptic number.

It is an amenable number.

31101434120 is an abundant number, since it is smaller than the sum of its proper divisors (39026681080).

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

31101434120 is a wasteful number, since it uses less digits than its factorization.

31101434120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665437 (or 1665433 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31101434120 its reverse (2143410113), we get a palindrome (33244844233).

The spelling of 31101434120 in words is "thirty-one billion, one hundred one million, four hundred thirty-four thousand, one hundred twenty".