131225106 has 16 divisors (see below), whose sum is σ = 264062304. Its totient is φ = 43473024.

The previous prime is 131225063. The next prime is 131225113. The reversal of 131225106 is 601522131.

It is a super-2 number, since 2×131225106² = 34440056889422472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66111 + ... + 68066.

It is an arithmetic number, because the mean of its divisors is an integer number (16503894).

Almost surely, 2^131225106 is an apocalyptic number.

131225106 is an abundant number, since it is smaller than the sum of its proper divisors (132837198).

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

131225106 is a wasteful number, since it uses less digits than its factorization.

131225106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134345.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 131225106 is about 11455.3527226358. The cubic root of 131225106 is about 508.1660466350.

Adding to 131225106 its reverse (601522131), we get a palindrome (732747237).

The spelling of 131225106 in words is "one hundred thirty-one million, two hundred twenty-five thousand, one hundred six".