1430131021 has 4 divisors (see below), whose sum is σ = 1560142944. Its totient is φ = 1300119100.

The previous prime is 1430130997. The next prime is 1430131039. The reversal of 1430131021 is 1201310341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1430131021 - 2¹³ = 1430122829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1430130986 and 1430131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430111021) 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, 65005945 + ... + 65005966.

It is an arithmetic number, because the mean of its divisors is an integer number (390035736).

Almost surely, 2^1430131021 is an apocalyptic number.

1430131021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1430131021 is a deficient number, since it is larger than the sum of its proper divisors (130011923).

1430131021 is a wasteful number, since it uses less digits than its factorization.

1430131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130011922.

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

The square root of 1430131021 is about 37817.0731416380. The cubic root of 1430131021 is about 1126.6575785109.

Adding to 1430131021 its reverse (1201310341), we get a palindrome (2631441362).

The spelling of 1430131021 in words is "one billion, four hundred thirty million, one hundred thirty-one thousand, twenty-one".