131442502 has 4 divisors (see below), whose sum is σ = 197163756. Its totient is φ = 65721250.

The previous prime is 131442473. The next prime is 131442517. The reversal of 131442502 is 205244131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205244131 = 211 ⋅972721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32860624 + ... + 32860627.

It is an arithmetic number, because the mean of its divisors is an integer number (49290939).

Almost surely, 2^131442502 is an apocalyptic number.

131442502 is a deficient number, since it is larger than the sum of its proper divisors (65721254).

131442502 is an equidigital number, since it uses as much as digits as its factorization.

131442502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65721253.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 131442502 is about 11464.8376351347. The cubic root of 131442502 is about 508.4465120622.

Adding to 131442502 its reverse (205244131), we get a palindrome (336686633).

The spelling of 131442502 in words is "one hundred thirty-one million, four hundred forty-two thousand, five hundred two".