11019402931 has 4 divisors (see below), whose sum is σ = 11037985992. Its totient is φ = 11000819872.

The previous prime is 11019402883. The next prime is 11019402943. The reversal of 11019402931 is 13920491011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11019402931 - 2¹¹ = 11019400883 is a prime.

It is a super-2 number, since 2×11019402931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11019402893 and 11019402902.

It is not an unprimeable number, because it can be changed into a prime (11019402991) 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, 9290641 + ... + 9291826.

It is an arithmetic number, because the mean of its divisors is an integer number (2759496498).

Almost surely, 2^11019402931 is an apocalyptic number.

11019402931 is a deficient number, since it is larger than the sum of its proper divisors (18583061).

11019402931 is an equidigital number, since it uses as much as digits as its factorization.

11019402931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18583060.

The product of its (nonzero) digits is 1944, while the sum is 31.

Adding to 11019402931 its reverse (13920491011), we get a palindrome (24939893942).

The spelling of 11019402931 in words is "eleven billion, nineteen million, four hundred two thousand, nine hundred thirty-one".