31101218004 has 48 divisors (see below), whose sum is σ = 77920569216. Its totient is φ = 9619814400.

The previous prime is 31101218003. The next prime is 31101218041. The reversal of 31101218004 is 40081210113.

It is a happy number.

It is a super-2 number, since 2×31101218004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101218003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1059157 + ... + 1088124.

It is an arithmetic number, because the mean of its divisors is an integer number (1623345192).

Almost surely, 2^31101218004 is an apocalyptic number.

31101218004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31101218004 is an abundant number, since it is smaller than the sum of its proper divisors (46819351212).

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

31101218004 is a wasteful number, since it uses less digits than its factorization.

31101218004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147376 (or 2147374 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 31101218004 its reverse (40081210113), we get a palindrome (71182428117).

The spelling of 31101218004 in words is "thirty-one billion, one hundred one million, two hundred eighteen thousand, four".