131131012 has 6 divisors (see below), whose sum is σ = 229479278. Its totient is φ = 65565504.

The previous prime is 131131009. The next prime is 131131031. The reversal of 131131012 is 210131131.

It can be written as a sum of positive squares in only one way, i.e., 68657796 + 62473216 = 8286^2 + 7904^2 .

It is a super-3 number, since 3×131131012³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131130983 and 131131001.

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 as a sum of consecutive naturals, namely, 16391373 + ... + 16391380.

Almost surely, 2^131131012 is an apocalyptic number.

It is an amenable number.

131131012 is a deficient number, since it is larger than the sum of its proper divisors (98348266).

131131012 is a wasteful number, since it uses less digits than its factorization.

131131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32782757 (or 32782755 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131131012 is about 11451.2449978157. The cubic root of 131131012 is about 508.0445586806.

Adding to 131131012 its reverse (210131131), we get a palindrome (341262143).

It can be divided in two parts, 1311 and 31012, that added together give a palindrome (32323).

The spelling of 131131012 in words is "one hundred thirty-one million, one hundred thirty-one thousand, twelve".