131344220432 has 20 divisors (see below), whose sum is σ = 256814104140. Its totient is φ = 65069612928.

The previous prime is 131344220429. The next prime is 131344220461. The reversal of 131344220432 is 234022443131.

It can be written as a sum of positive squares in 2 ways, for example, as 94841825296 + 36502395136 = 307964^2 + 191056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131344220395 and 131344220404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37654283 + ... + 37657770.

It is an arithmetic number, because the mean of its divisors is an integer number (12840705207).

Almost surely, 2^131344220432 is an apocalyptic number.

It is an amenable number.

131344220432 is a deficient number, since it is larger than the sum of its proper divisors (125469883708).

131344220432 is a wasteful number, since it uses less digits than its factorization.

131344220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75312170 (or 75312164 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 131344220432 its reverse (234022443131), we get a palindrome (365366663563).

The spelling of 131344220432 in words is "one hundred thirty-one billion, three hundred forty-four million, two hundred twenty thousand, four hundred thirty-two".