131103445 has 32 divisors (see below), whose sum is σ = 179698176. Its totient is φ = 90969600.

The previous prime is 131103443. The next prime is 131103451. The reversal of 131103445 is 544301131.

It is not a de Polignac number, because 131103445 - 2¹ = 131103443 is a prime.

It is a super-2 number, since 2×131103445² = 34376226581736050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131103443) 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, 105367 + ... + 106603.

It is an arithmetic number, because the mean of its divisors is an integer number (5615568).

Almost surely, 2^131103445 is an apocalyptic number.

It is an amenable number.

131103445 is a deficient number, since it is larger than the sum of its proper divisors (48594731).

131103445 is a wasteful number, since it uses less digits than its factorization.

131103445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131103445 is about 11450.0412663012. The cubic root of 131103445 is about 508.0089549851.

Adding to 131103445 its reverse (544301131), we get a palindrome (675404576).

The spelling of 131103445 in words is "one hundred thirty-one million, one hundred three thousand, four hundred forty-five".