1301212031 has 4 divisors (see below), whose sum is σ = 1487099472. Its totient is φ = 1115324592.

The previous prime is 1301212027. The next prime is 1301212043. The reversal of 1301212031 is 1302121031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1302121031 = 5807 ⋅224233.

It is a cyclic number.

It is not a de Polignac number, because 1301212031 - 2² = 1301212027 is a prime.

It is a super-2 number, since 2×1301212031² = 3386305499238289922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301211997 and 1301212015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301212001) 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, 92943710 + ... + 92943723.

It is an arithmetic number, because the mean of its divisors is an integer number (371774868).

Almost surely, 2^1301212031 is an apocalyptic number.

1301212031 is a deficient number, since it is larger than the sum of its proper divisors (185887441).

1301212031 is an equidigital number, since it uses as much as digits as its factorization.

1301212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185887440.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1301212031 is about 36072.3166846822. The cubic root of 1301212031 is about 1091.7319577082.

Adding to 1301212031 its reverse (1302121031), we get a palindrome (2603333062).

The spelling of 1301212031 in words is "one billion, three hundred one million, two hundred twelve thousand, thirty-one".