11621051031 has 8 divisors (see below), whose sum is σ = 15495234304. Its totient is φ = 7747117560.

The previous prime is 11621051027. The next prime is 11621051083. The reversal of 11621051031 is 13015012611.

It is a happy number.

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

It is not a de Polignac number, because 11621051031 - 2² = 11621051027 is a prime.

It is a super-2 number, since 2×11621051031² (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 = 11621050989 and 11621051007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621052031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138210 + ... + 205776.

It is an arithmetic number, because the mean of its divisors is an integer number (1936904288).

Almost surely, 2^11621051031 is an apocalyptic number.

11621051031 is a deficient number, since it is larger than the sum of its proper divisors (3874183273).

11621051031 is an equidigital number, since it uses as much as digits as its factorization.

11621051031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124901.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 11621051031 its reverse (13015012611), we get a palindrome (24636063642).

The spelling of 11621051031 in words is "eleven billion, six hundred twenty-one million, fifty-one thousand, thirty-one".