1213131004 has 12 divisors (see below), whose sum is σ = 2124737944. Its totient is φ = 606063024.

The previous prime is 1213130983. The next prime is 1213131041. The reversal of 1213131004 is 4001313121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120162 + ... + 129865.

Almost surely, 2^1213131004 is an apocalyptic number.

It is an amenable number.

1213131004 is a deficient number, since it is larger than the sum of its proper divisors (911606940).

1213131004 is a wasteful number, since it uses less digits than its factorization.

1213131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251244 (or 251242 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1213131004 is about 34830.0302038342. The cubic root of 1213131004 is about 1066.5205649285.

Adding to 1213131004 its reverse (4001313121), we get a palindrome (5214444125).

The spelling of 1213131004 in words is "one billion, two hundred thirteen million, one hundred thirty-one thousand, four".