1213001431 has 8 divisors (see below), whose sum is σ = 1226307600. Its totient is φ = 1199760960.

The previous prime is 1213001429. The next prime is 1213001453. The reversal of 1213001431 is 1341003121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213001431 - 2¹ = 1213001429 is a prime.

It is a super-2 number, since 2×1213001431² = 2942744943216095522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213001131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21171 + ... + 53611.

It is an arithmetic number, because the mean of its divisors is an integer number (153288450).

Almost surely, 2^1213001431 is an apocalyptic number.

1213001431 is a deficient number, since it is larger than the sum of its proper divisors (13306169).

1213001431 is a wasteful number, since it uses less digits than its factorization.

1213001431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32849.

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

The square root of 1213001431 is about 34828.1700782571. The cubic root of 1213001431 is about 1066.4825923356.

Adding to 1213001431 its reverse (1341003121), we get a palindrome (2554004552).

The spelling of 1213001431 in words is "one billion, two hundred thirteen million, one thousand, four hundred thirty-one".