1131421401 has 12 divisors (see below), whose sum is σ = 1782846000. Its totient is φ = 685709880.

The previous prime is 1131421393. The next prime is 1131421433. The reversal of 1131421401 is 1041241311.

It is not a de Polignac number, because 1131421401 - 2³ = 1131421393 is a prime.

It is a super-2 number, since 2×1131421401² = 2560228773281605602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131421301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5714151 + ... + 5714348.

It is an arithmetic number, because the mean of its divisors is an integer number (148570500).

Almost surely, 2^1131421401 is an apocalyptic number.

1131421401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1131421401 is a deficient number, since it is larger than the sum of its proper divisors (651424599).

1131421401 is a wasteful number, since it uses less digits than its factorization.

1131421401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428516 (or 11428513 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1131421401 is about 33636.6080483749. The cubic root of 1131421401 is about 1042.0169810071.

Adding to 1131421401 its reverse (1041241311), we get a palindrome (2172662712).

The spelling of 1131421401 in words is "one billion, one hundred thirty-one million, four hundred twenty-one thousand, four hundred one".