131211317451 has 16 divisors (see below), whose sum is σ = 179789230368. Its totient is φ = 85056768000.

The previous prime is 131211317449. The next prime is 131211317459. The reversal of 131211317451 is 154713112131.

It is not a de Polignac number, because 131211317451 - 2¹ = 131211317449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131211317459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191460 + ... + 546881.

It is an arithmetic number, because the mean of its divisors is an integer number (11236826898).

Almost surely, 2^131211317451 is an apocalyptic number.

131211317451 is a deficient number, since it is larger than the sum of its proper divisors (48577912917).

131211317451 is a wasteful number, since it uses less digits than its factorization.

131211317451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739982.

The product of its digits is 2520, while the sum is 30.

Adding to 131211317451 its reverse (154713112131), we get a palindrome (285924429582).

The spelling of 131211317451 in words is "one hundred thirty-one billion, two hundred eleven million, three hundred seventeen thousand, four hundred fifty-one".