1213011404 has 96 divisors (see below), whose sum is σ = 2582072640. Its totient is φ = 492134400.

The previous prime is 1213011389. The next prime is 1213011407. The reversal of 1213011404 is 4041103121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1213011407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1134182 + ... + 1135250.

It is an arithmetic number, because the mean of its divisors is an integer number (26896590).

Almost surely, 2^1213011404 is an apocalyptic number.

It is an amenable number.

1213011404 is an abundant number, since it is smaller than the sum of its proper divisors (1369061236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213011404 is a wasteful number, since it uses less digits than its factorization.

1213011404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1213011404 is about 34828.3132522952. The cubic root of 1213011404 is about 1066.4855151136.

Adding to 1213011404 its reverse (4041103121), we get a palindrome (5254114525).

The spelling of 1213011404 in words is "one billion, two hundred thirteen million, eleven thousand, four hundred four".