131201402 has 4 divisors (see below), whose sum is σ = 196802106. Its totient is φ = 65600700.

The previous prime is 131201401. The next prime is 131201417. The reversal of 131201402 is 204102131.

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., 131079601 + 121801 = 11449^2 + 349^2 .

It is not an unprimeable number, because it can be changed into a prime (131201401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32800349 + ... + 32800352.

Almost surely, 2^131201402 is an apocalyptic number.

131201402 is a deficient number, since it is larger than the sum of its proper divisors (65600704).

131201402 is an equidigital number, since it uses as much as digits as its factorization.

131201402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65600703.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 131201402 is about 11454.3180504123. The cubic root of 131201402 is about 508.1354470704.

Adding to 131201402 its reverse (204102131), we get a palindrome (335303533).

The spelling of 131201402 in words is "one hundred thirty-one million, two hundred one thousand, four hundred two".