131023331002 has 4 divisors (see below), whose sum is σ = 196534996506. Its totient is φ = 65511665500.

The previous prime is 131023330951. The next prime is 131023331017. The reversal of 131023331002 is 200133320131.

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., 83035609281 + 47987721721 = 288159^2 + 219061^2 .

It is a super-2 number, since 2×131023331002² (a number of 23 digits) 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, 32755832749 + ... + 32755832752.

Almost surely, 2^131023331002 is an apocalyptic number.

131023331002 is a deficient number, since it is larger than the sum of its proper divisors (65511665504).

131023331002 is an equidigital number, since it uses as much as digits as its factorization.

131023331002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65511665503.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 131023331002 its reverse (200133320131), we get a palindrome (331156651133).

The spelling of 131023331002 in words is "one hundred thirty-one billion, twenty-three million, three hundred thirty-one thousand, two".