131023562 has 4 divisors (see below), whose sum is σ = 196535346. Its totient is φ = 65511780.

The previous prime is 131023553. The next prime is 131023603. The reversal of 131023562 is 265320131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115111441 + 15912121 = 10729^2 + 3989^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32755889 + ... + 32755892.

Almost surely, 2^131023562 is an apocalyptic number.

131023562 is a deficient number, since it is larger than the sum of its proper divisors (65511784).

131023562 is an equidigital number, since it uses as much as digits as its factorization.

131023562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65511783.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 131023562 is about 11446.5524067293. The cubic root of 131023562 is about 507.9057552449.

Adding to 131023562 its reverse (265320131), we get a palindrome (396343693).

The spelling of 131023562 in words is "one hundred thirty-one million, twenty-three thousand, five hundred sixty-two".