131640262 has 8 divisors (see below), whose sum is σ = 212649696. Its totient is φ = 60757032.

The previous prime is 131640259. The next prime is 131640343. The reversal of 131640262 is 262046131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531518 + ... + 2531569.

It is an arithmetic number, because the mean of its divisors is an integer number (26581212).

Almost surely, 2^131640262 is an apocalyptic number.

131640262 is a deficient number, since it is larger than the sum of its proper divisors (81009434).

131640262 is a wasteful number, since it uses less digits than its factorization.

131640262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063102.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 131640262 is about 11473.4590250717. The cubic root of 131640262 is about 508.7013763453.

Adding to 131640262 its reverse (262046131), we get a palindrome (393686393).

The spelling of 131640262 in words is "one hundred thirty-one million, six hundred forty thousand, two hundred sixty-two".