131213223004 has 12 divisors (see below), whose sum is σ = 229628559384. Its totient is φ = 65605063184.

The previous prime is 131213222999. The next prime is 131213223007. The reversal of 131213223004 is 400322312131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213223007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184639 + ... + 544534.

It is an arithmetic number, because the mean of its divisors is an integer number (19135713282).

Almost surely, 2^131213223004 is an apocalyptic number.

It is an amenable number.

131213223004 is a deficient number, since it is larger than the sum of its proper divisors (98415336380).

131213223004 is a wasteful number, since it uses less digits than its factorization.

131213223004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774164 (or 774162 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131213223004 its reverse (400322312131), we get a palindrome (531535535135).

The spelling of 131213223004 in words is "one hundred thirty-one billion, two hundred thirteen million, two hundred twenty-three thousand, four".