101031420440 has 16 divisors (see below), whose sum is σ = 227320696080. Its totient is φ = 40412568160.

The previous prime is 101031420433. The next prime is 101031420473. The reversal of 101031420440 is 44024130101.

It is a super-2 number, since 2×101031420440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262892716 + ... + 1262892795.

It is an arithmetic number, because the mean of its divisors is an integer number (14207543505).

Almost surely, 2^101031420440 is an apocalyptic number.

101031420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101031420440 is an abundant number, since it is smaller than the sum of its proper divisors (126289275640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101031420440 is a wasteful number, since it uses less digits than its factorization.

101031420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525785522 (or 2525785518 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 101031420440 its reverse (44024130101), we get a palindrome (145055550541).

The spelling of 101031420440 in words is "one hundred one billion, thirty-one million, four hundred twenty thousand, four hundred forty".