1031012011191 has 32 divisors (see below), whose sum is σ = 1402076332800. Its totient is φ = 673748798976.

The previous prime is 1031012011123. The next prime is 1031012011223. The reversal of 1031012011191 is 1911102101301.

1031012011191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1031012011191 - 2¹¹ = 1031012009143 is a prime.

It is a super-2 number, since 2×1031012011191² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031012011291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110275785 + ... + 110285133.

It is an arithmetic number, because the mean of its divisors is an integer number (43814885400).

Almost surely, 2^{1031012011191} is an apocalyptic number.

1031012011191 is a deficient number, since it is larger than the sum of its proper divisors (371064321609).

1031012011191 is a wasteful number, since it uses less digits than its factorization.

1031012011191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12063.

The product of its (nonzero) digits is 54, while the sum is 21.

Adding to 1031012011191 its reverse (1911102101301), we get a palindrome (2942114112492).

The spelling of 1031012011191 in words is "one trillion, thirty-one billion, twelve million, eleven thousand, one hundred ninety-one".