311213103000 has 128 divisors (see below), whose sum is σ = 1022089536000. Its totient is φ = 78622243200.

The previous prime is 311213102987. The next prime is 311213103121. The reversal of 311213103000 is 301312113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2672940 + ... + 2786939.

It is an arithmetic number, because the mean of its divisors is an integer number (7985074500).

Almost surely, 2^311213103000 is an apocalyptic number.

311213103000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311213103000 is an abundant number, since it is smaller than the sum of its proper divisors (710876433000).

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

311213103000 is a wasteful number, since it uses less digits than its factorization.

311213103000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459922 (or 5459908 counting only the distinct ones).

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

Adding to 311213103000 its reverse (301312113), we get a palindrome (311514415113).

The spelling of 311213103000 in words is "three hundred eleven billion, two hundred thirteen million, one hundred three thousand".