131222510 has 8 divisors (see below), whose sum is σ = 236200536. Its totient is φ = 52489000.

The previous prime is 131222503. The next prime is 131222603. The reversal of 131222510 is 15222131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6561116 + ... + 6561135.

It is an arithmetic number, because the mean of its divisors is an integer number (29525067).

Almost surely, 2^131222510 is an apocalyptic number.

131222510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131222510 is a deficient number, since it is larger than the sum of its proper divisors (104978026).

131222510 is a wasteful number, since it uses less digits than its factorization.

131222510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122258.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 131222510 is about 11455.2394126007. The cubic root of 131222510 is about 508.1626956306.

Adding to 131222510 its reverse (15222131), we get a palindrome (146444641).

The spelling of 131222510 in words is "one hundred thirty-one million, two hundred twenty-two thousand, five hundred ten".