31123103230102 has 16 divisors (see below), whose sum is σ = 50287586917680. Its totient is φ = 14361136389792.

The previous prime is 31123103230081. The next prime is 31123103230123. The reversal of 31123103230102 is 20103230132113.

It is an interprime number because it is at equal distance from previous prime (31123103230081) and next prime (31123103230123).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140420193 + ... + 140641660.

It is an arithmetic number, because the mean of its divisors is an integer number (3142974182355).

Almost surely, 2^{31123103230102} is an apocalyptic number.

31123103230102 is a deficient number, since it is larger than the sum of its proper divisors (19164483687578).

31123103230102 is a wasteful number, since it uses less digits than its factorization.

31123103230102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281066127.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31123103230102 its reverse (20103230132113), we get a palindrome (51226333362215).

The spelling of 31123103230102 in words is "thirty-one trillion, one hundred twenty-three billion, one hundred three million, two hundred thirty thousand, one hundred two".