131019458 has 4 divisors (see below), whose sum is σ = 196529190. Its totient is φ = 65509728.

The previous prime is 131019443. The next prime is 131019461. The reversal of 131019458 is 854910131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 854910131 = 2579 ⋅331489.

It can be written as a sum of positive squares in only one way, i.e., 74874409 + 56145049 = 8653^2 + 7493^2 .

It is a super-2 number, since 2×131019458² = 34332196749227528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32754863 + ... + 32754866.

Almost surely, 2^131019458 is an apocalyptic number.

131019458 is a deficient number, since it is larger than the sum of its proper divisors (65509732).

131019458 is an equidigital number, since it uses as much as digits as its factorization.

131019458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65509731.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 131019458 is about 11446.3731373741. The cubic root of 131019458 is about 507.9004522115.

Adding to 131019458 its reverse (854910131), we get a palindrome (985929589).

The spelling of 131019458 in words is "one hundred thirty-one million, nineteen thousand, four hundred fifty-eight".