1301538031 has 4 divisors (see below), whose sum is σ = 1301632200. Its totient is φ = 1301443864.

The previous prime is 1301537999. The next prime is 1301538041. The reversal of 1301538031 is 1308351031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1308351031 = 13 ⋅100642387.

It is a cyclic number.

It is not a de Polignac number, because 1301538031 - 2⁵ = 1301537999 is a prime.

It is a super-2 number, since 2×1301538031² = 3388002492278713922, 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 = 1301537987 and 1301538005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301538041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21841 + ... + 55498.

It is an arithmetic number, because the mean of its divisors is an integer number (325408050).

Almost surely, 2^1301538031 is an apocalyptic number.

1301538031 is a deficient number, since it is larger than the sum of its proper divisors (94169).

1301538031 is an equidigital number, since it uses as much as digits as its factorization.

1301538031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94168.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1301538031 is about 36076.8351023202. The cubic root of 1301538031 is about 1091.8231226866.

Adding to 1301538031 its reverse (1308351031), we get a palindrome (2609889062).

The spelling of 1301538031 in words is "one billion, three hundred one million, five hundred thirty-eight thousand, thirty-one".