2131000340 has 24 divisors (see below), whose sum is σ = 5114401152. Its totient is φ = 730628640.

The previous prime is 2131000331. The next prime is 2131000373. The reversal of 2131000340 is 430001312.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7610576 + ... + 7610855.

It is an arithmetic number, because the mean of its divisors is an integer number (213100048).

Almost surely, 2^2131000340 is an apocalyptic number.

2131000340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131000340 is an abundant number, since it is smaller than the sum of its proper divisors (2983400812).

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

2131000340 is a wasteful number, since it uses less digits than its factorization.

2131000340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15221447 (or 15221445 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2131000340 is about 46162.7592329575. The cubic root of 2131000340 is about 1286.8497415796.

Adding to 2131000340 its reverse (430001312), we get a palindrome (2561001652).

The spelling of 2131000340 in words is "two billion, one hundred thirty-one million, three hundred forty", and thus it is an aban number.