131000021130 has 64 divisors (see below), whose sum is σ = 348604580736. Its totient is φ = 31236960000.

The previous prime is 131000021129. The next prime is 131000021137. The reversal of 131000021130 is 31120000131.

It is a super-2 number, since 2×131000021130² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131000021137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3233721 + ... + 3273980.

It is an arithmetic number, because the mean of its divisors is an integer number (5446946574).

Almost surely, 2^131000021130 is an apocalyptic number.

131000021130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131000021130 is an abundant number, since it is smaller than the sum of its proper divisors (217604559606).

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

131000021130 is a wasteful number, since it uses less digits than its factorization.

131000021130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507783.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 131000021130 its reverse (31120000131), we get a palindrome (162120021261).

The spelling of 131000021130 in words is "one hundred thirty-one billion, twenty-one thousand, one hundred thirty".